using System;
using System.Collections.Generic;
using System.Drawing;
using System.Globalization;
using System.Linq;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using BeWo.Core;
using BeWo.Core.Service;
using BeWo.Validation;

using BS.Shared;
using BS.Shared.Core;
using BS.Shared.DataContracts;
using BS.Shared.DataContracts.ClientPartials;
using BS.Shared.DataContracts.Compact;
using BS.Shared.Extensions;
using Brush = System.Windows.Media.Brush;
using Brushes = System.Windows.Media.Brushes;
using Color = System.Windows.Media.Color;

namespace BeWo.ViewModel
{
    public class ServiceRecordVM : AbstractDCMapperVM<ServiceRecordDC>
    {
        #region Constants and Fields

        public static string PropertyName_Category = "Category";

        public static string PropertyName_Category2Services = "Category2Services";

		public static string PropertyName_SortedCategories = "SortedCategories";

        public static string PropertyName_CostBearer = "CostBearer";

        public static string PropertyName_Customer = "Customer";

        public static string PropertyName_Date = "Date";

		public static string PropertyName_EditableEndDate = "EditableEndDate";

        public static string PropertyName_Duration = "Duration";

        public static string PropertyName_Employee = "Employee";

        public static string PropertyName_EndTime = "EndTimeEditString";

        public static string PropertyName_GoalTree = "GoalTree";

        public static string PropertyName_GroupEmployeeCount = "GroupEmployeeCount";

        public static string PropertyName_GroupPersonCount = "GroupPersonCount";

        public static string PropertyName_GroupRoundedDuration = "GroupRoundedDuration";

        public static string PropertyName_IsGoalTreeVisible = "IsGoalTreeVisible";

        public static string PropertyName_Notice = "Notice";

        public static string PropertyName_Notice2 = "Notice2";
        
        public static string PropertyName_Notice3 = "Notice3";
        
        public static string PropertyName_Notice4 = "Notice4";

        public static string PropertyName_Notice5 = "Notice5";

        public static string PropertyName_RTFNotice = "RTFNotice";

        public static string PropertyName_RTFNotice2 = "RTFNotice2";

        public static string PropertyName_RTFNotice3 = "RTFNotice3";

        public static string PropertyName_RTFNotice4 = "RTFNotice4";

        public static string PropertyName_RTFNotice5 = "RTFNotice5";

        public static string PropertyName_PossibleCostBearers = "PossibleCostBearers";

        public static string PropertyName_PossibleCustomers = "PossibleCustomers";

        public static string PropertyName_PossibleServiceDescriptions = "PossibleServiceDescriptions";

        public static string PropertyName_PossibleSupportConcepts = "PossibleSupportConcepts";

        public static string PropertyName_RoundedDuration = "RoundedDuration";

        public static string PropertyName_SelectedGoals = "SelectedGoals";

        public static string PropertyName_ServiceDescription = "ServiceDescription";

        public static string PropertyName_StartTime = "StartTimeEditString";

        public static string PropertyName_SupportConcept = "SupportConcept";

        public static string PropertyName_ServiceRecordType = "ServiceRecordType";

        public static string PropertyName_IsServiceRecordTypeDefaultActivity = "IsServiceRecordTypeDefaultActivity";

        public static string PropertyName_IsServiceRecordTypeContent = "IsServiceRecordTypeContent";

		public static string PropertyName_DistanceInMeter = "DistanceInMeter";

        public static string PropertyName_DurationInStunden = "DurationInStunden";

        public static string PropertyName_ServiceRecordFormat = "ServiceRecordFormat";

        public static string PropertyName_OnlyMonth = "OnlyMonth";

        public static string PropertyName_OnlyYear = "OnlyYear";

        public static string PropertyName_DurationSTD = "DurationSTD";

        public static string PropertyName_EndDate = "EndDate";

        public static string PropertyName_DurationMonthYearGes = "DurationMonthYearGes";

        private static readonly DateTime NULL_TIME = new DateTime(2000, 1, 1, 0, 0, 1);

        private static BitmapImage unterschriftVorhanden = null;

        private Dictionary<ServiceCategoryDC, List<ServiceDescriptionDC>> _Category2Services;

        //private readonly List<SupportConceptTreeNodeDC> _Tree;

        private List<ValueListEntryDC> _AllGoalCategories;

        private List<ValueListEntryDC> _AllGoals;

        private ServiceCategoryDC _Category;

        private FlatSupportConceptTreeNodeDC _ChoosenNode;

        private CompactOrganisationDC _CostBearer;

        private CompactCustomerDC _Customer;

        private DateTime? _Date;

        private DateTime? _EndDate;

        private bool _DeleteAllowed = true;

        private decimal? _Duration;

        private decimal? _DurationSTD;

        private bool _EditAllowed = true;

        private CompactEmployeeDC _Employee;

        private DateTime? _EndTime;

		private DateTime? _EditableEndDate;

        private List<SupportConceptGoalDC> _GoalTree;

        private int? _GroupEmployeeCount;

        private long? _GroupOid;

        private long? _SignatureOid;

        private int? _GroupPersonCount;

        private decimal? _GroupRoundedDuration;

        private string _InsUser;

        private DateTime? _InsertedOn;

        private string _Notice;

        private string _Notice2;
        
        private string _Notice3;
        
        private string _Notice4;
        
        private string _Notice5;

        private string _RTFNotice;

        private string _RTFNotice2;

        private string _RTFNotice3;

        private string _RTFNotice4;

        private string _RTFNotice5;

        private decimal _RoundedDuration;

        private ObservableSortCollection<ValueListEntryDC> _SelectedGoals;

        private ServiceDescriptionDC _ServiceDescription;

        private DateTime? _StartTime;

        private CompactSupportConceptDC _SupportConcept;

        private ServiceRecordTypeId _ServiceRecordType = ServiceRecordTypeId.DefaultActivity;

        public List<ServiceAccountingDC> _ServiceAccountings;

		private int? _DistanceInMeter;

        private ZeiterfassungsDauer? _DurationInStunden;

        private ServiceRecordFormate? _ServiceRecordFormat;

        private string _OnlyMonth;

        private string _OnlyYear;

        private decimal? _DurationMonthYearGes;

        private bool _isUnterschrift;

        private string _IsFloatGesetzt = "False";

        private string[] _MonateBinden = {"Januar","Februar","März","April","Mai","Juni","Juli","August","September","Oktober","November","Dezember"};

        #endregion

        #region Constructors and Destructors

        public ServiceRecordVM()
        {
            DataContract = new ServiceRecordDC {Notice = ""};
            if (_DurationSTD == null)
                _DurationSTD = 0;
            if (_Duration == null)
                _Duration = 0;
        }

        public ServiceRecordVM(
            ServiceRecordDC pDC,
            Dictionary<ServiceCategoryDC, List<ServiceDescriptionDC>> pCategory2Services,
            List<ValueListEntryDC> pAllGoalCategories,
            List<ValueListEntryDC> pAllGoals)
            : base(pDC, pDC.ServiceRecordOid == null)
        {
            //_DurationInStunden = BeWoApp.AppSettings.LetzteZeiterfassungsDauer;
            _Category2Services = pCategory2Services;

            ChangeGoalTree(pAllGoalCategories, pAllGoals);
            if (_DurationSTD == null)
                _DurationSTD = 0;
            if (_Duration == null)
                _Duration = 0;
        }

        #endregion

        #region Properties
		
		public int? DistanceInMeter
        {
			get { return _DistanceInMeter; }

            set
            {
				if (AreDifferent(_DistanceInMeter, value))
                {
					_DistanceInMeter = value;
                    StoreDirtyInformation(AreDifferent(DataContract.DistanceInMeter, value), PropertyName_DistanceInMeter);
					FirePropertyChanged(PropertyName_DistanceInMeter);
                }
            }
        }

        public decimal AssistanceDuration
        {
            get
            {
                if (GroupOid != null)
                {
                    return RoundedDuration;
                }

                if (_Duration != null)
                {
                    return Duration.Value;
                }

                return 0;
            }
        }

        public Brush BackgroundBrush
        {
            get
            {
                Brush brush = null;
                if (_GroupOid != null)
                {
                    brush = Application.Current.FindResource("GroupBookingBackgroundBrush") as Brush;
                }

                return brush ?? Brushes.White;
                }
            }

        public String CategoryString
        {
            get { return _Category != null ? _Category.ToString() : null; }
        }

        public String ServiceDescriptionString
        {
            get { return _ServiceDescription != null ? _ServiceDescription.ToString() : null; }
        }
		
		public List<ValueListEntryDC> AllGoalCategories
        {
			get { return _AllGoalCategories; }

            set { _AllGoalCategories = value; }
        }

		public List<ValueListEntryDC> AllGoals
		{
			get { return _AllGoals; }

			set { _AllGoals = value; }
		}

		public ServiceCategoryDC Category
		{
			get { return _Category; }

			set
			{
				if (AreDifferent(_Category, value))
				{
					_Category = value;
					ServiceDescription = null;
					FirePropertyChanged(PropertyName_Category);
					FirePropertyChanged(PropertyName_PossibleServiceDescriptions);
				}
			}
		}

        public Dictionary<ServiceCategoryDC, List<ServiceDescriptionDC>> Category2Services
        {
            get { return _Category2Services; }
            set
            {
                _Category2Services = value;
                FirePropertyChanged(PropertyName_Category2Services);
				FirePropertyChanged(PropertyName_SortedCategories);
				FirePropertyChanged(PropertyName_PossibleServiceDescriptions);
            }
        }

		public IList<ServiceCategoryDC> SortedCategories
		{
			get
			{
                return Category2Services != null ? Category2Services.Keys.OrderBy(cat => cat.Position).ToList() : null;
			}
		}

        public FlatSupportConceptTreeNodeDC ChoosenNode
        {
            get { return _ChoosenNode; }

            set
            {
                _ChoosenNode = value;

                if (value != null)
                {
                    if (value.SupportConceptTreeNodeDC != null)
                    {
                        if (Employee == null)
                        {
                            Employee = value.SupportConceptTreeNodeDC.Employee;
                        }

                        Customer       = value.SupportConceptTreeNodeDC.Customer;
                        SupportConcept = value.SupportConceptTreeNodeDC.SupportConcept;
                        CostBearer     = value.SupportConceptTreeNodeDC.CostBearer;
                    }
                }
                else
                {
                    Employee       = null;
                    Customer       = null;
                    SupportConcept = null;
                    CostBearer     = null;
                }
            }
        }

        public CompactOrganisationDC CostBearer
        {
            get { return _CostBearer; }

            set
            {
                if (AreDifferent(_CostBearer, value))
                {
                    _CostBearer = value;
                    StoreDirtyInformation(!AreEqual(DataContract.CostBearer, value), PropertyName_CostBearer);
                    FirePropertyChanged(PropertyName_CostBearer);
                    FirePropertyChanged(PropertyName_RoundedDuration);
                }
            }
        }

        [Validation(ValidationRule = ValidationRules.NotNullOrStringEmpty)]
        public CompactCustomerDC Customer
        {
            get { return _Customer; }

            set
            {
                if (AreDifferent(_Customer, value))
                {
                    _Customer = value;
                    StoreDirtyInformation(!AreEqual(DataContract.Customer, value), PropertyName_Customer);
                    FirePropertyChanged(PropertyName_Customer);
                }
            }
        }

        [Validation(ValidationRule = ValidationRules.NotNullOrStringEmpty)]
        public DateTime? Date
        {
            get { return _Date; }

            set
            {
                if (AreDifferent(_Date, value))
                {
                    _Date = value;

                    if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
                    {
                        
                        var x = _EditableEndDate.Value.Subtract(_Date.Value);

                        if (_DurationInStunden == ZeiterfassungsDauer.Minuten)
                        {
                            _DurationSTD = (decimal)x.TotalMinutes;
                        }else{
                            _DurationSTD = (decimal)x.TotalHours;
                        }


                        FirePropertyChanged(PropertyName_DurationSTD);
                        TimeCheckForDurationSTD();
                    }
                    else
                    {                    
                        TimeCheck();                     
                    }

                    FirePropertyChanged(PropertyName_Date);                 
                }
            }
        }

        public DateTime? DateAndTime
        {
            get
            {
                var date = _Date;
                var time = _StartTime;

                
                
                // beim addend er zeit / dadurch das dateTime und Startime gleich sind werden diese zusammen gerechnet und das löst den fehler aus.
                //also inprinzip nur date zurück geben und kuken was danach passiert

                // dadurch das eine neuentwicklung stattgefunden hat, scheint dieser bereich nicht mehr nötig zu sein 
                if (date != null && time != null)
                {     
                    if(date.Value.Second != time.Value.Second)     
                        date = date.Value.AddSeconds(time.Value.Second);

                    time = new DateTime(date.Value.Year,date.Value.Month,date.Value.Day,time.Value.Hour,time.Value.Minute,time.Value.Second);
                }
                
                return time; // date
            }
        }

        public DateTime? StartDate
        {
            get { return DateAndTime; }
        }
        
        public DateTime? StartMinutes
        {
            get { return StartDate.HasValue && StartDate.Value.Second == 0 ? StartDate : null; }
        }

        public DateTime? EndMinutes
        {
            get { return EndDate.HasValue && EndDate.Value.Second == 0 ? EndDate : null; }
        }

        public DateTime? EndDate
        {
            get
            {
                if(_EndDate == null){
                var dt = DateAndTime;
                if (dt.HasValue)
                {
                    if (_StartTime != null)
                    {
                        var timeDt = _StartTime.Value;

                        if (_DurationInStunden == ZeiterfassungsDauer.Minuten)
                        {
                                if (GroupOid != null && GroupRoundedDuration != null)
                                {
                                    dt = timeDt.AddMinutes((double)GroupRoundedDuration);
                                }
                                else
                                {
                                   
                                    dt = timeDt.AddMinutes((double)RoundedDuration);
                                }
                            }
                        else
                        {
                                
                                if (GroupOid != null && GroupRoundedDuration != null)
                                {
                                    var x = GroupRoundedDuration/60;
                                    dt = timeDt.AddHours((double)x /*(double)GroupRoundedDuration*/);
                                }
                                else
                                {
                                    var x = RoundedDuration / 60;
                                    dt = timeDt.AddHours((double)x /*(double)RoundedDuration*/);
                                }
                            }
                        
                    }
                }

                return dt;
                }
                else
                {
                    return _EndDate;
                }
            }
            set
            {

                if (AreDifferent(_EndDate, value))
                {
                    _EndDate = value;


                    FirePropertyChanged(PropertyName_EndDate);
                }

            }
        }

        public String Id
        {
            get { return String.Format("{0}", DataContract.ServiceRecordOid); }
        }

       [Validation(ValidationRule = ValidationRules.GreaterThanOrEqualZero)]
       public decimal? Duration
        {
            get
            {
                if (_Duration == null )
                {
                    return 0;
                }else{
                    return _Duration;
                }
            }

            set
            {          
                if (AreDifferent(_Duration, value))
                {
                    _Duration = value;

                    TimeCheck();
                    
                    FirePropertyChanged(PropertyName_Duration);               
                    FirePropertyChanged(PropertyName_RoundedDuration);
                    
                }                   
            }
        }


        public string DurationAndRoundedDuration
        {
            get
            {
                var rd = BeWoWpfUtils.GetDecimalValueWithMaxDecimal(RoundedDuration, 2);

                if (Category != null && Category.Percentage > 0 && Category.Percentage < 100)
                {
                    rd = (rd*Category.Percentage)/100;
                }
             
                if(_ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum) { 

                    var strResult = _GroupOid != null ? String.Format("{0} ({0})", rd) : String.Format("{0} ({1})", DurationSTD, rd);

                    return strResult;

                }else if (_ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitMonatJahr)
                {
                    var strResult = _GroupOid != null ? String.Format("{0} ({0})", rd) : String.Format("{0} ({1})", DurationMonthYearGes, rd);

                    return strResult;

                }
                else
                {
                    if (DurationInStunden.HasValue && DurationInStunden.Value == ZeiterfassungsDauer.Stunden)
                    {
                        return _GroupOid != null ? String.Format("{0} ({0})", rd) : String.Format("{0:0.##} ({1:0.##})", DurationSTD, rd / 60);
                    }


                    return _GroupOid != null ? String.Format("{0} ({0})", rd) : String.Format("{0} ({1})", Duration, rd);
                }

                
            }
        }
        
        public bool EditAllowed
        {
            get
            {
                var allowed = false;

                if (BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecordView_Edit))
                {
                    allowed = true;
                }
                else if (BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_AllowChangeWithin24Hours))
                {
                    if (_InsertedOn != null)
                    {
                        if (DateTime.Now < _InsertedOn.Value.AddDays(1))
                        {
                            allowed = true;
                        }
                    }
                }

                if (allowed && BeWoApp.AppSettings.MaxDaysEditServiceRecordsAllowed > 0)
                {
                    if (!BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_AllowEditAfterMaxDaysInNextMonth))
                    {
                        if (Date != null)
                        {
                            var dt = new DateTime(Date.Value.Year, Date.Value.Month, 1);
                            dt = dt.AddMonths(1);
                            dt = dt.AddDays(BeWoApp.AppSettings.MaxDaysEditServiceRecordsAllowed);
                            if (DateTime.Now >= dt)
                            {
                                allowed = false;
                            }
                        }
                    }
                }

	            if (allowed && !BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_AllowEditForOtherEmployees))
	            {
                    if (BeWoApp.LoggedOnEmployee.EmployeeOid != Employee.EmployeeOid)
			            allowed = false;
	            }
				if (allowed && GroupOid.HasValue)
				{
					if (!BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_AllowCreatingGroupBooking))
					{
						allowed = false;
					}
				}
				if (allowed && BeWoApp.AppSettings.AnzTageZeiterfassErfolgt > 0)
				{
					if (!BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecordAllowEditAfterMindays))
					{
						if (Date != null)
						{
							var dt = new DateTime(Date.Value.Year, Date.Value.Month, Date.Value.Day);
							dt = dt.AddDays(BeWoApp.AppSettings.AnzTageZeiterfassErfolgt + 1);
							if (DateTime.Now >= dt)
							{
								allowed = false;
							}
						}
					}
				}               
                return _EditAllowed && allowed;
            }

            set { _EditAllowed = value; }
        }

        public bool DeleteAllowed
        {
            get
            {
                var allowed = false;
                if (BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecordView_Delete))
                {
                    allowed = true;
                }
                else if (BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_AllowChangeWithin24Hours))
                {
                    if (_InsertedOn != null)
                    {
                        if (DateTime.Now < _InsertedOn.Value.AddDays(1))
                        {
                            allowed = true;
                        }
                    }
                }

                if (allowed && BeWoApp.AppSettings.MaxDaysEditServiceRecordsAllowed > 0)
                {
                    if (!BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_AllowEditAfterMaxDaysInNextMonth))
                    {
                        if (Date != null)
                        {
                            var dt = new DateTime(Date.Value.Year, Date.Value.Month, 1);
                            dt = dt.AddMonths(1);
                            dt = dt.AddDays(BeWoApp.AppSettings.MaxDaysEditServiceRecordsAllowed);
                            if (DateTime.Now >= dt)
                            {
                                allowed = false;
                            }
                        }
                    }
                }
				if (allowed && BeWoApp.AppSettings.AnzTageZeiterfassErfolgt > 0)
				{
					if (!BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecordAllowEditAfterMindays))
					{
						if (Date != null)
						{
							var dt = new DateTime(Date.Value.Year, Date.Value.Month, Date.Value.Day);
							dt = dt.AddDays(BeWoApp.AppSettings.AnzTageZeiterfassErfolgt + 1);
							if (DateTime.Now >= dt)
							{
								allowed = false;
							}
						}
					}
				}
				if (allowed && !BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_AllowEditForOtherEmployees))
				{
                    if (BeWoApp.LoggedOnEmployee.EmployeeOid != Employee.EmployeeOid)
						allowed = false;
				}
				if (allowed && GroupOid.HasValue)
				{
					if (!BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_AllowCreatingGroupBooking))
					{
						allowed = false;
					}
				}
                return _DeleteAllowed && allowed;
            }

            set { _DeleteAllowed = value; }
        }

        public static bool IsHistoryAllowed
		{
            get { return BeWoApp.LoggedOnUser.HasRight(UserRightType.ServiceRecord_ShowHistory); }
			}

        [Validation(ValidationRule = ValidationRules.NotNullOrStringEmpty)]
        public CompactEmployeeDC Employee
        {
            get { return _Employee; }

            set
            {
                if (AreDifferent(_Employee, value))
                {
                    _Employee = value;

                    StoreDirtyInformation(!AreEqual(DataContract.Employee, value), PropertyName_Employee);
                    FirePropertyChanged(PropertyName_Employee);
                }
            }
        }

        public string EmployeeName
        {
            get
            {
                if (_Employee != null)
                {
                    return _Employee.FirstName + " " + _Employee.LastName;
                }
                    return string.Empty;
                }
            }

        public String EndTimeEditString
        {
            get
            {             
                if (_EndTime == null || _EndTime.Value.Second != 0)
                { 
                    return null;
                }
                return String.Format("{0:HH:mm}", _EndTime);
            }

            set
            {
				if (String.IsNullOrEmpty(value))
					EndTime = null;
				else
				{
					if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
					{
						DateTime? endTime = EditableEndDate;
						
						String dtStr = String.Format("{0:dd.MM.yyyy} {1}", endTime, value);
						DateTime dt;
				    
						if (DateTime.TryParse(dtStr, out dt))
							EndTime = dt;
						else
							EndTime = null;
					}
					else
					{
						DateTime? endTime = EndTime;
						if (!endTime.HasValue)
							endTime = EndDate;
						if (!endTime.HasValue)
							endTime = DateTime.Now;

						String dtStr = String.Format("{0:dd.MM.yyyy} {1}", endTime, value);
						DateTime dt;
                   
						if (DateTime.TryParse(dtStr, out dt))
							EndTime = dt;
						else
							EndTime = null;
					}
				}
            }
        }

		public DateTime? EditableEndDate
        {
            get {

                if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
                {

                    //var x = new DateTime(_EditableEndDate.Value.Year, _EditableEndDate.Value.Month, _EditableEndDate.Value.Day, _EditableEndDate.Value.Hour, _EditableEndDate.Value.Minute,0);
                    

                    return _EditableEndDate;
                   // return x;
                }else{
                    return null;
                }
			}

            set
            {
                
				if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
				{                          
				    if (AreDifferent(_EditableEndDate, value))
				    {                    
				        if (value < Date)
				        {
				            _EditableEndDate = Date;				           
				        }
				        else
				        {
				            _EditableEndDate = value;
				        }


                        var x = _EditableEndDate.Value.Subtract(_Date.Value);

				        if (_DurationInStunden == ZeiterfassungsDauer.Minuten)
				        {
                            _DurationSTD = (decimal)x.TotalMinutes;
				        }
				        else
				        {
                            _DurationSTD = (decimal)x.TotalHours;				            
				        }

				        TimeCheckForDurationSTD();             
                        FirePropertyChanged(PropertyName_EditableEndDate);
                        FirePropertyChanged(PropertyName_DurationSTD);
                        
				    }                
                }
            }
        }
        
        public DateTime? EndTime
        {
            get {

                if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
                {
                    if (!_EndTime.HasValue )
                        return DateTime.Now.Date;
                    else
                        return _EndTime;
                }
                else
                    return _EndTime; 
            }

            set
            {
				bool cont = (_EndTime == null && value != null) || (_EndTime != null && value == null) || (_EndTime != null && _EndTime.Value.TimeOfDay != value.Value.TimeOfDay);

                if (cont)
                {
                    if (value != null)
                    {
                        Console.WriteLine("Change EndTime " + value.Value.ToShortTimeString());
                    }

                    _EndTime = value;

                    if (_EndTime != null)
                    {
                        if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum) 
						{
							//if (_StartTime.Value.Date == null)
							//{
							//	StartTime = new DateTime(StartTime.Value.Year, StartTime.Value.Month, StartTime.Value.Day, StartTime.Value.Hour, 0, 0);
							//}
                            
                            _StartTime = new DateTime(Date.Value.Year, Date.Value.Month, Date.Value.Day, StartTime.Value.Hour, StartTime.Value.Minute, StartTime.Value.Second);

                            var diff = _EndTime.Value.Subtract(_StartTime.Value);

                            if (_DurationInStunden == ZeiterfassungsDauer.Stunden)
                            {
                                _DurationSTD = (decimal)diff.TotalHours;
                            }
                            else
                            {
                                _DurationSTD = (decimal)diff.TotalMinutes;
                            }

                            TimeCheckForDurationSTD();
                            FirePropertyChanged(PropertyName_DurationSTD);

						}
						else
						{
							if (_StartTime.Value.Second != 0)
							{
								StartTime = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, _EndTime.Value.Hour, 0, 0);
							}

							var start = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, StartTime.Value.Hour, StartTime.Value.Minute, 0);


						    if (start.TimeOfDay > _EndTime.Value.TimeOfDay)
						    {
						        _EndTime = _EndTime.Value.AddDays(1);
						    }

                            var diff = _EndTime.Value.Subtract(start);


                            if (_DurationInStunden == ZeiterfassungsDauer.Stunden)
                            {                            
                                    _Duration = (decimal)diff.TotalHours;
                            }
                            else
                            {                           
                                    _Duration = (decimal)diff.TotalMinutes;
                            }

                            TimeCheck();
                            FirePropertyChanged(PropertyName_Duration);
						}
                    }
					
                    FirePropertyChanged(PropertyName_EndTime);
                }
                
            }
        }

        public List<SupportConceptGoalDC> GoalTree
        {
            get { return _GoalTree; }

            set
            {
                _GoalTree = value;
                FirePropertyChanged(PropertyName_GoalTree);
                FirePropertyChanged(PropertyName_IsGoalTreeVisible);
            }
        }

        public int? GroupEmployeeCount
        {
            get { return _GroupEmployeeCount; }

            set
            {
                if (AreDifferent(_GroupEmployeeCount, value))
                {
                    _GroupEmployeeCount = value;
                    StoreDirtyInformation(AreDifferent(DataContract.GroupEmployeeCount, value), PropertyName_GroupEmployeeCount);
                    FirePropertyChanged(PropertyName_GroupEmployeeCount);
                }
            }
        }

        public long? GroupOid
        {
            get { return _GroupOid; }

            set { _GroupOid = value; }
        }

        public long? SignatureOid
        {
            get { return _SignatureOid; }

            set { _SignatureOid = value; }
        }

        public ImageSource IsUnterschrift
        {
            get
            {
                if(_SignatureOid != null) { 
                  
                    if (unterschriftVorhanden == null)
                    {
                        unterschriftVorhanden = CreateImage("../../Ressources/Icons/Haeckchen.png");
                    }
                    return unterschriftVorhanden;
                }
                else
                {
                    return null;
                }
            }
            //set { _isUnterschrift = value; }
        }

        private BitmapImage CreateImage(String path)
        {
            BitmapImage bix = new BitmapImage();
            bix.BeginInit();
            bix.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
            bix.CacheOption = BitmapCacheOption.OnLoad;
            bix.UriSource = new Uri(path, UriKind.Relative);
            bix.EndInit();
            
            return bix;
        }

        public int? GroupPersonCount
        {
            get { return _GroupPersonCount; }

            set
            {
                if (AreDifferent(_GroupPersonCount, value))
                {
                    _GroupPersonCount = value;
                    StoreDirtyInformation(AreDifferent(DataContract.GroupPersonCount, value), PropertyName_GroupPersonCount);
                    FirePropertyChanged(PropertyName_GroupPersonCount);
                }
            }
        }

        public decimal? GroupRoundedDuration
        {
            get { return _GroupRoundedDuration; }

            set
            {
                if (AreDifferent(_GroupRoundedDuration, value))
                {
                    _GroupRoundedDuration = value;
                    StoreDirtyInformation(AreDifferent(DataContract.GroupRoundedDuration, value), PropertyName_GroupRoundedDuration);
                    FirePropertyChanged(PropertyName_GroupRoundedDuration);
                }
            }
        }

        public int Index { get; set; }

        public string InsUser
        {
            get { return _InsUser; }

            set { _InsUser = value; }
        }

        public string InsertedOn
        {
            get
            {
                if (_InsertedOn != null)
                {
                    return _InsertedOn.Value.ToShortDateString() + " " + _InsertedOn.Value.ToShortTimeString();
                }

                return null;
            }
        }

        public bool IsGoalTreeVisible
        {
            get { return _GoalTree != null && _GoalTree.Count > 0; }
        }

        public string LongDateString
        {
            get
            {
                var date = string.Empty;
            
                string time = string.Empty;

                string endtime = string.Empty;

                if (_StartTime != null)
                {
                    var timeDt = _StartTime.Value;

                    if (timeDt.Second == 0)
                    {
                        time = timeDt.ToShortTimeString();


                        if (_DurationInStunden == ZeiterfassungsDauer.Stunden)
                        {
                            if (GroupOid != null && GroupRoundedDuration != null)
                            {
                                timeDt = timeDt.AddMinutes((double)GroupRoundedDuration);
                            }
                            else
                            {
                                timeDt = timeDt.AddMinutes((double)RoundedDuration);
                            }
                        }
                        else
                        {
                            if (GroupOid != null && GroupRoundedDuration != null)
                            {
                                timeDt = timeDt.AddMinutes((double)GroupRoundedDuration);
                            }
                            else
                            {
                                timeDt = timeDt.AddMinutes((double)RoundedDuration);
                            }
                        }
                        
                        endtime = timeDt.ToShortTimeString();

                        //time = time + " - " + timeDt.ToShortTimeString();
                    }
                }


                if (_Date != null)
                {

                    if (endtime.Equals("") && time.Equals(""))
                    {
                        date = DateTimeFormatInfo.CurrentInfo.GetAbbreviatedDayName(_Date.Value.DayOfWeek) + ", " + _Date.Value.ToShortDateString(); 
                    }
                    else {
                        if (_EditableEndDate.HasValue) {                    
                            if (_EditableEndDate.Value.Date != _Date.Value.Date)
                            {
                                time = StartTime.Value.TimeOfDay.ToString();
                                endtime = _EditableEndDate.Value.TimeOfDay.ToString();

                                date = DateTimeFormatInfo.CurrentInfo.GetAbbreviatedDayName(_Date.Value.DayOfWeek) + ", " + _Date.Value.ToShortDateString() + "  " + time + "  -  " + _EditableEndDate.Value.ToShortDateString() + "  " + endtime;
                            }
                            else
                            {
                                time = time + "  -  " + endtime;
                                date = DateTimeFormatInfo.CurrentInfo.GetAbbreviatedDayName(_Date.Value.DayOfWeek) + ", " + _Date.Value.ToShortDateString() + "  " + time;
                            }
                        }
                        else
                        {
                            time = time + "  -  " + endtime;
                            date = DateTimeFormatInfo.CurrentInfo.GetAbbreviatedDayName(_Date.Value.DayOfWeek) + ", " + _Date.Value.ToShortDateString() + "  " + time;
                        }
                    }
                  }

                //date += " " + time;

                if (GroupOid != null && GroupPersonCount != null && GroupRoundedDuration != null)
                {
                    date += "   Gruppe (" + GroupPersonCount.Value + " Teilnehmer, " + GroupEmployeeCount.Value + " Betreuer). Dauer: " +
                            BeWoWpfUtils.GetDecimalValueWithMaxDecimal(GroupRoundedDuration.Value, 2) + " Minuten.";
                }

                return date;
            }
        }

        public Brush MouseOverBackgroundBrush
        {
            get
            {
                Brush brush = null;
                if (_GroupOid != null)
                {
                    brush = Application.Current.FindResource("GroupBookingMouseOverBackgroundBrush") as Brush;
                }

                return brush ?? new SolidColorBrush(Color.FromArgb(0xFF, 0xCC, 0xE0, 0xFF));
            }
        }

        [Validation(ValidationRule = ValidationRules.EmptyNoticeInNewServiceRecordsAllowed)]
        public string Notice
        {
            get { return _Notice; }

            set
            {
                if (AreDifferent(_Notice, value))
                {
                    _Notice = value;
                    StoreDirtyInformation(AreDifferent(DataContract.Notice, value), PropertyName_Notice);
                    FirePropertyChanged(PropertyName_Notice);
                }
            }
        }

        public string Notice2
        {
            get { return _Notice2; }

            set
            {
                if (AreDifferent(_Notice2, value))
                {
                    _Notice2 = value;
                    StoreDirtyInformation(AreDifferent(DataContract.Notice2, value), PropertyName_Notice2);
                    FirePropertyChanged(PropertyName_Notice2);
                }
            }
        }
  
        public string Notice3
        {
            get { return _Notice3; }

            set
            {
                if (AreDifferent(_Notice3, value))
                {
                    _Notice3 = value;
                    StoreDirtyInformation(AreDifferent(DataContract.Notice3, value), PropertyName_Notice3);
                    FirePropertyChanged(PropertyName_Notice3);
                }
            }
        }

        public string Notice4
        {
            get { return _Notice4; }

            set
            {
                if (AreDifferent(_Notice4, value))
                {
                    _Notice4 = value;
                    StoreDirtyInformation(AreDifferent(DataContract.Notice4, value), PropertyName_Notice4);
                    FirePropertyChanged(PropertyName_Notice4);
                }
            }
        }

        public string Notice5
        {
            get { return _Notice5; }

            set
            {
                if (AreDifferent(_Notice5, value))
                {
                    _Notice5 = value;
                    StoreDirtyInformation(AreDifferent(DataContract.Notice5, value), PropertyName_Notice5);
                    FirePropertyChanged(PropertyName_Notice5);
                }
            }
        }

        public string RTFNotice
        {
            get { return _RTFNotice; }

            set
            {
                if (AreDifferent(_RTFNotice, value))
                {
                    _RTFNotice = value;
                    StoreDirtyInformation(AreDifferent(DataContract.RTFNotice1, value), PropertyName_RTFNotice);
                    FirePropertyChanged(PropertyName_RTFNotice);
                }
            }
        }

        public string RTFNotice2
        {
            get { return _RTFNotice2; }

            set
            {
                if (AreDifferent(_RTFNotice2, value))
                {
                    _RTFNotice2 = value;
                    StoreDirtyInformation(AreDifferent(DataContract.RTFNotice2, value), PropertyName_RTFNotice2);
                    FirePropertyChanged(PropertyName_RTFNotice2);
                }
            }
        }

        public string RTFNotice3
        {
            get { return _RTFNotice3; }

            set
            {
                if (AreDifferent(_RTFNotice3, value))
                {
                    _RTFNotice3 = value;
                    StoreDirtyInformation(AreDifferent(DataContract.RTFNotice3, value), PropertyName_RTFNotice3);
                    FirePropertyChanged(PropertyName_RTFNotice3);
                }
            }
        }

        public string RTFNotice4
        {
            get { return _RTFNotice4; }

            set
            {
                if (AreDifferent(_RTFNotice4, value))
                {
                    _RTFNotice4 = value;
                    StoreDirtyInformation(AreDifferent(DataContract.RTFNotice4, value), PropertyName_RTFNotice4);
                    FirePropertyChanged(PropertyName_RTFNotice4);
                }
            }
        }

        public string RTFNotice5
        {
            get { return _RTFNotice5; }

            set
            {
                if (AreDifferent(_RTFNotice5, value))
                {
                    _RTFNotice5 = value;
                    StoreDirtyInformation(AreDifferent(DataContract.RTFNotice5, value), PropertyName_RTFNotice5);
                    FirePropertyChanged(PropertyName_RTFNotice5);
                }
            }
        }

        public List<ServiceDescriptionDC> PossibleServiceDescriptions
        {
            get
            {
                if (_Category == null)
                {
                    return null;
                }

                return _Category2Services.ContainsKey(_Category) ? _Category2Services[_Category] : null;
            }
        }

        public decimal RoundedDurationAnzeige
        {
            get
            {
                if (_ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitMonatJahr || (DurationInStunden.HasValue && DurationInStunden.Value == ZeiterfassungsDauer.Stunden))
                {
                    return _RoundedDuration/60;
                }
                else
                {
                    return _RoundedDuration;
                }
            }
        }
        
        public decimal RoundedDuration
        {
            get { return _RoundedDuration; }

            set { _RoundedDuration = value; }
            }

        public Brush SelectedBackgroundBrush
        {
            get
            {
                Brush brush = null;
                if (_GroupOid != null)
                {
                    brush = Application.Current.FindResource("GroupBookingSelectedBackgroundBrush") as Brush;
                }

                return brush ?? new SolidColorBrush(Color.FromArgb(0xFF, 0x93, 0xBC, 0xFF));
                }
            }

        public bool HasGoals
        {
            get { return SelectedGoals.Count > 0; }
        }

        public String GoalString
        {
            get
            {
                var goals = "";

                foreach (var goal in SelectedGoals)
                {
                    if (goals.Length > 0)
                        goals += ", ";
                    goals += goal.TypeDescription;
                }

                return goals;
            }
        }

        public ObservableSortCollection<ValueListEntryDC> SelectedGoals
        {
            get
            {
                return _SelectedGoals ?? (_SelectedGoals = new ObservableSortCollection<ValueListEntryDC>(Comparer.ValueListEntryDCComparer));
            }
        }

        [Validation(ValidationRule = ValidationRules.NotNullOrStringEmpty)]
        public ServiceDescriptionDC ServiceDescription
        {
            get { return _ServiceDescription; }

            set
            {
                if (AreDifferent(_ServiceDescription, value))
                {
                    _ServiceDescription = value;
                    StoreDirtyInformation(!AreEqual(DataContract.ServiceDescription, value), PropertyName_ServiceDescription);
                    FirePropertyChanged(PropertyName_ServiceDescription);
                }
            }
        }

        public string ShortDateString
        {
            get
            {
                var date = string.Empty;

                if (_Date != null)
                {
                    date = _Date.Value.ToShortDateString();
                }

                return date;
            }
        }

        public string ShortNotice
        {
            get
            {
                var desc = Notice;

                if (desc.IndexOf("\r\n") > 0)
                {
                    desc = desc.Substring(0, desc.IndexOf("\r\n"));
                }

                return desc;
            }
        }

        public string ShortTimeString
        {
            get
            {
                var str = string.Empty;

                if (_StartTime != null && _StartTime.Value.Second == 0)
                {
                    str = _StartTime.Value.ToShortTimeString();
                }

                return str;
            }
        }

        public String StartTimeEditString
        {
            get
            {
                if (_StartTime == null || _StartTime.Value.Second != 0)
                {
                    return null;
                }

                return String.Format("{0:HH:mm}", _StartTime);
            }

            set
            {
                if (String.IsNullOrEmpty(value))
                    StartTime = null;
                else
                {
                    var startTime = StartTime;

                    if (!startTime.HasValue)
                    {
                        startTime = StartDate;
                    }

                    if (!startTime.HasValue)
                    {
                        startTime = DateTime.Now;
                    }

                    var dtStr = String.Format("{0:dd.MM.yyyy} {1}", startTime, value);
                    DateTime dt;
                    if (DateTime.TryParse(dtStr, out dt))
                    {
                        StartTime = dt;
                    }
                    else
                    {
                        StartTime = null;
                }
            }
        }
        }

        public DateTime? StartTime
        {
            get
            {
                if(_StartTime != null)
                    return _StartTime.Value.Second != 0 ? null : _StartTime;
                else
                {
                    return new DateTime();
                }
            }

            set
            {            
                DateTime? newStartTime = value ?? NULL_TIME;

                Console.WriteLine("Change StartTime " + newStartTime.Value.ToShortTimeString());
                if ((_StartTime == null && newStartTime != NULL_TIME) ||
                    (_StartTime != null && _StartTime.Value.TimeOfDay != newStartTime.Value.TimeOfDay))
                {
                    _StartTime = newStartTime;

                    if (_StartTime.Value.Second == 0)
                    {
                        if (_EndTime != null)
                        {
                            var end = new DateTime(_StartTime.Value.Year, _StartTime.Value.Month, _StartTime.Value.Day,
                                                    _EndTime.Value.Hour, _EndTime.Value.Minute, 0);

                            var diff = end.Subtract(_StartTime.Value);
                            
                            if (diff.TotalSeconds < 0)
                            {
                                EndTime = _StartTime;
                                end = EndTime.Value;
                            }

                            diff = end.Subtract(_StartTime.Value);

                            
                            if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
                            {

                                var x = _EditableEndDate.Value.Subtract(_StartTime.Value);
                                if (_DurationInStunden == ZeiterfassungsDauer.Stunden)
                                {                                 
                                    DurationSTD = (decimal) x.TotalHours;
                                }
                                else
                                {
                                    DurationSTD = (decimal) x.TotalMinutes;
                                }


                                FirePropertyChanged(PropertyName_DurationSTD);
                                TimeCheckForDurationSTD();

                            }
                            else
                            {
                                if (_DurationInStunden == ZeiterfassungsDauer.Stunden)
                                {
                                    Duration = (decimal) diff.TotalHours;
                                }
                                else
                                {
                                    Duration = (decimal)diff.TotalMinutes;
                                }
                                FirePropertyChanged(PropertyName_Duration);
                                TimeCheck();
                            }
                        }
                        //else 
                        //{
                        //    if (BeWoApp.AppSettings.IsEndDateVisible)
                        //    {
                        //        if (_DurationInStunden == ZeiterfassungsDauer.Stunden)
                        //        {
                        //            EndTime = _StartTime.Value.AddHours(DurationSTD.Value);
                        //        }else{
                        //            EndTime = _StartTime.Value.AddMinutes(DurationSTD.Value);
                        //        }
                        //    }else{
                        //        if (_DurationInStunden == ZeiterfassungsDauer.Stunden)
                        //        {
                        //            EndTime = _StartTime.Value.AddHours(Duration.Value);
                        //        }else{
                        //            EndTime = _StartTime.Value.AddMinutes(Duration.Value);
                        //        }
                        //    }
                        //}
                    }

                    FirePropertyChanged(PropertyName_StartTime);
                }
            }
        }

        public CompactSupportConceptDC SupportConcept
        {
            get { return _SupportConcept; }

            set
            {
                if (AreDifferent(_SupportConcept, value))
                {
                    _SupportConcept = value;
                    CostBearer = null;
                    StoreDirtyInformation(!AreEqual(DataContract.SupportConcept, value), PropertyName_SupportConcept);
                    FirePropertyChanged(PropertyName_SupportConcept);
                    FirePropertyChanged(PropertyName_PossibleCostBearers);
                }
            }
        }

        public ServiceRecordTypeId ServiceRecordType
        {
            get { return _ServiceRecordType; }

            set
            {
                if (AreDifferent(_ServiceRecordType, value))
                {
                    _ServiceRecordType = value;

                    StoreDirtyInformation(!AreEqual(DataContract.ServiceRecordType, value), PropertyName_ServiceRecordType);
                    FirePropertyChanged(PropertyName_ServiceRecordType);
                    FirePropertyChanged(PropertyName_IsServiceRecordTypeContent);
                    FirePropertyChanged(PropertyName_IsServiceRecordTypeDefaultActivity);
                }
            }
        }

        public bool IsServiceRecordTypeContent
        {
            get { return ServiceRecordType == ServiceRecordTypeId.Content; }

            set { ServiceRecordType = value ? ServiceRecordTypeId.Content : ServiceRecordTypeId.DefaultActivity; }
            }

        public bool IsServiceRecordTypeDefaultActivity
        {
            get { return ServiceRecordType == ServiceRecordTypeId.DefaultActivity; }

            set { ServiceRecordType = value ? ServiceRecordTypeId.DefaultActivity : ServiceRecordTypeId.Content; }
        }

        public ZeiterfassungsDauer? DurationInStunden
        {
            get 
            {  
                if(_DurationInStunden == null)
                {
                    _DurationInStunden = ZeiterfassungsDauer.Minuten;

                    return _DurationInStunden;
                }
                else
                {
                    return _DurationInStunden;
                }
            }

            set
            {
               
                if (value == ZeiterfassungsDauer.Minuten && _DurationInStunden == ZeiterfassungsDauer.Stunden )
                {
                    if (BeWoApp.AppSettings.IsZeiterfassDateNormal && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.OriginaleZeiterfassung )
                    {
                        if (_Duration.HasValue)
                        {
                            var x = _Duration.Value * 60;
                            _Duration = x; //Math.Round(x,2);
                        }
                            
                    }
                        

                    if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
                    {
                        if (_DurationSTD.HasValue)
                        {
                            var x = _DurationSTD.Value * 60;
                            _DurationSTD = x; //Math.Round(x, 2);
                        }
                            
                    }
                        
                }
                else if (value == ZeiterfassungsDauer.Stunden && _DurationInStunden == ZeiterfassungsDauer.Minuten )
                {

                    if (BeWoApp.AppSettings.IsZeiterfassDateNormal && ServiceRecordFormat == null|| ServiceRecordFormat == ServiceRecordFormate.OriginaleZeiterfassung)
                    {
                        if (_Duration.HasValue)
                        {
                            var x = _Duration.Value / 60;
                            _Duration = x;// Math.Round(x, 2);
                        }
                    }

                    if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
                    {
                        if (_DurationSTD.HasValue)
                        {
                            var x = _DurationSTD.Value / 60;
                            _DurationSTD = x; /* Math.Round(x, 2);*/
                        }                       
                    }
                
                }           

                if (AreDifferent(_DurationInStunden, value))
                {
                    _DurationInStunden = value;
                    StoreDirtyInformation(AreDifferent(DataContract.DurationInStunden, value), PropertyName_DurationInStunden);
                    
                    FirePropertyChanged(PropertyName_DurationInStunden); 
                    
                    if (BeWoApp.AppSettings.IsEndDateVisible && ServiceRecordFormat == null|| ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
                    {
                        TimeCheckForDurationSTD();
                        FirePropertyChanged(PropertyName_DurationSTD);
                        
                    }else
                        if (BeWoApp.AppSettings.IsZeiterfassDateNormal && ServiceRecordFormat == null || ServiceRecordFormat == ServiceRecordFormate.OriginaleZeiterfassung)
                        {
                            TimeCheck();
                            FirePropertyChanged(PropertyName_Duration);
                        
                        }
                    
                }
            }
        }

        public ServiceRecordFormate? ServiceRecordFormat 
        { 
            get{ return _ServiceRecordFormat; }
            set
            {
                if (AreDifferent(_ServiceRecordFormat, value))
                {
                    _ServiceRecordFormat = value;
                    StoreDirtyInformation(AreDifferent(DataContract.ServiceRecordFormat, value), PropertyName_ServiceRecordFormat);

                    FirePropertyChanged(PropertyName_ServiceRecordFormat);                
                }
            }
        }

        public string OnlyMonth
        {
            get
            {
                if (_OnlyMonth.IsNullOrEmpty())
                {
                    _OnlyMonth = DateTime.Now.ToString("MMMM");
                }

                return _OnlyMonth;
            }
            set
            {
                if (AreDifferent(_OnlyMonth, value))
                {
                    _OnlyMonth = value;

                    FirePropertyChanged(PropertyName_OnlyMonth);
                }

            }
        }


        public string[] MonateBinden
        {
            get { return _MonateBinden; }

        }

        public string[] JahreBind()
        {
            string[] s = new string[11];

            int x = -5;
            for (int i = 0; i < 11; i++)
            {
                var a = DateTime.Now.Year + x; 
                s[i] = a.ToString();
                x++;
            }

            return s;
        }

        public string[] JahreBinden
        {
            get { return JahreBind(); }
            
        }


        
        public string OnlyYear
        {
            get
            {
                if (_OnlyYear.IsNullOrEmpty())
                {
                    _OnlyYear = DateTime.Now.Year.ToString();
                }

                return _OnlyYear;
            }
            set
            {
                if (AreDifferent(_OnlyYear, value))
                {
                    _OnlyYear = value;
              
                    FirePropertyChanged(PropertyName_OnlyYear);
                }
            }
        }
      
        
        [Validation(ValidationRule = ValidationRules.GreaterThanOrEqualZero)]
        public decimal? DurationSTD
        {
            get
            {
                if (_DurationSTD == null  )
                {
                    return 0;
                }else{
                    return _DurationSTD;
                }
            }

            set
            {
                //if (BeWoApp.AppSettings.IsZeiterfassungInStdMin)
                //{
                    if (AreDifferent(_DurationSTD, value))
                    {
                        _DurationSTD = value;


                        StoreDirtyInformation(AreDifferent(DataContract.RoundedDuration, value),
                            PropertyName_DurationSTD);

                        FirePropertyChanged(PropertyName_DurationSTD);
                        FirePropertyChanged(PropertyName_RoundedDuration);
                        TimeCheckForDurationSTD();

                    }
                //}
                //else if (BeWoApp.AppSettings.IsEndDateVisible)
                //{
                //    Duration = val
                //}

            }
        }

        [Validation(ValidationRule = ValidationRules.GreaterThanOrEqualZero)]
        public decimal? DurationMonthYearGes
        {
            get
            {
                if (_DurationMonthYearGes == null)
                {
                    return 0;
                }
                else
                {
                    return _DurationMonthYearGes;
                }
            }

            set
            {
                if (AreDifferent(_DurationMonthYearGes, value))
                {
                    _DurationMonthYearGes = value;

                    StoreDirtyInformation(AreDifferent(DataContract.RoundedDuration, value),
                        PropertyName_DurationMonthYearGes);

                   
                    FirePropertyChanged(PropertyName_DurationMonthYearGes);
                    FirePropertyChanged(PropertyName_RoundedDuration); 
                    TimeCheckMonatJahr();
                    
                }           
            }
        }

        //public string IsFloatGesetzt
        //{
        //    get { return _IsFloatGesetzt; }
        //    set
        //    {
        //        if (AreDifferent(_IsFloatGesetzt, value))
        //        {
        //            _IsFloatGesetzt = value;

        //            FirePropertyChanged(PropertyName_DurationSTD);
        //            FirePropertyChanged(PropertyName_Duration);
        //        }
        //    }
        //}


        #endregion

        #region Public Methods

        public void ChangeGoalTree(List<ValueListEntryDC> goalCats, List<ValueListEntryDC> goals) //, List<ValueListEntryDC> goalsAndCats)
        {
            _AllGoalCategories = goalCats;
            _AllGoals = goals;

            var newList = new List<ValueListEntryDC>();

            if (_AllGoalCategories != null)
            {
                newList.AddRange(_AllGoalCategories);
            }

            if (_AllGoals != null)
            {
                newList.AddRange(_AllGoals);
            }

            GoalTree = SupportConceptService.CreateGoalTree(newList, SelectedGoals);
        }

        public void UpdateServiceAccountings(List<ServiceAccountingDC> serviceAccountings, Dictionary<ServiceCategoryDC, List<ServiceDescriptionDC>> allDict, bool hilfeplanAusgewaehlt)
        {
            _ServiceAccountings = serviceAccountings;
            var newCategoryDict = new Dictionary<ServiceCategoryDC, List<ServiceDescriptionDC>>();

			foreach (var cat in allDict.Keys)
			{
				bool add = true;
				if (hilfeplanAusgewaehlt && cat.OhneHilfeplan.HasValue && cat.OhneHilfeplan.Value == AccountingvisibilityType.NichtKlientenbezogen)
				{
					add = false;
				}
				else if (!hilfeplanAusgewaehlt && cat.OhneHilfeplan.HasValue && cat.OhneHilfeplan.Value == AccountingvisibilityType.NurKlientenbezogen)
				{
					add = false;
				}
				if (add)
				{
					newCategoryDict.Add(cat, allDict[cat]);
				}
			}
			
            ServiceCategoryDC firstCat = null;
            if (_ServiceAccountings != null && allDict != null)
            {
                var globalServices     = _ServiceAccountings.FindAll(sa => sa.ServiceDescription.ScopeType == ScopeTypeId.Global);
                var individualServices = _ServiceAccountings.FindAll(sa => sa.ServiceDescription.ScopeType == ScopeTypeId.Individual);

                if (globalServices.Count > 0)
                {
                    newCategoryDict = new Dictionary<ServiceCategoryDC, List<ServiceDescriptionDC>>();
                    foreach (var cat in allDict.Keys)
                    {
                        var sdList    = allDict[cat];
                        var newSdList = sdList.Where(sd => globalServices.Exists(sa => sa.ServiceDescription.Equals(sd))).ToList();

                        if (newSdList.Count > 0)
                        {
							if (firstCat == null || cat.Position < firstCat.Position)
								firstCat = cat;

							newCategoryDict.Add(cat, newSdList);
                        }
                    }
                }
                if (individualServices.Count > 0)
                {
                    newCategoryDict.Add(individualServices[0].ServiceDescription.Category,
                                        individualServices.Select(sa => sa.ServiceDescription).ToList());
                }
            }
            Category2Services = newCategoryDict;
            
            if (Category == null)
                Category = firstCat;
        }

        public ServiceRecordVM Clone()
        {
            var dc = new ServiceRecordDC();

            return new ServiceRecordVM(CopyToDataContract(dc), _Category2Services, _AllGoalCategories, _AllGoals);
        }

        public void CopyTo(ServiceRecordVM copy)
        {
            copy.Notice               = Notice;
            copy.Notice2              = Notice2;
            copy.Notice3              = Notice3;
            copy.Notice4              = Notice4;
            copy.Notice5              = Notice5;
            copy.RTFNotice            = RTFNotice;
            copy.RTFNotice2           = RTFNotice2;
            copy.RTFNotice3           = RTFNotice3;
            copy.RTFNotice4           = RTFNotice4;
            copy.RTFNotice5           = RTFNotice5;
            copy.StartTime            = StartTime;
            copy.EndTime              = EndTime;
            copy.Date                 = Date;
            copy.Duration             = Duration;
            copy.RoundedDuration      = RoundedDuration;
            copy.ServiceRecordType    = ServiceRecordType;
            copy.DistanceInMeter      = DistanceInMeter;
            copy.Employee             = Employee;
            copy.Customer             = Customer;
            copy.SupportConcept       = SupportConcept;
            copy.CostBearer           = CostBearer;
            copy.Category             = Category;
            copy.ServiceDescription   = ServiceDescription;
            copy.GroupEmployeeCount   = GroupEmployeeCount;
            copy.GroupPersonCount     = GroupPersonCount;
            copy.GroupOid             = GroupOid;
            copy.GroupRoundedDuration = GroupRoundedDuration;
            copy.SignatureOid = SignatureOid;
            
            copy.DurationInStunden = DurationInStunden;
            copy.ServiceRecordFormat = ServiceRecordFormat;

            copy.SelectedGoals.Clear();
            foreach (var item in SelectedGoals)
            {
                copy.SelectedGoals.Add(item);
            }

            copy.GoalTree = GoalTree;
        }

        public void SetInsertedOn(DateTime dt)
        {
            _InsertedOn = dt;
        }

        public override string ToString()
        {
            return _Customer + ": " + _Date.Value.ToLongDateString() + string.Format("-  Dauer: {0:0.00} min", RoundedDuration);
        }

        #endregion

        #region Methods
        
        protected override void InitByDataContract(ServiceRecordDC pDataContract)
        {         
            if (pDataContract.ServiceDescription != null)
            {         
                if (pDataContract.ServiceRecordFormat == ServiceRecordFormate.OriginaleZeiterfassung || pDataContract.ServiceRecordFormat == null)
                {
                   
                    _Date = pDataContract.Start.Value;
                    _StartTime = pDataContract.Start.Value;

                    _EditableEndDate = pDataContract.End.Value;
                    _DurationInStunden = pDataContract.DurationInStunden;
                    if (pDataContract.DurationInStunden == ZeiterfassungsDauer.Stunden )  
                    {
                        _DurationSTD = (decimal)(pDataContract.End.Value - pDataContract.Start.Value).TotalHours;

                        _Duration = _DurationSTD;

                        _EndTime = pDataContract.Start.Value.AddHours((double)_DurationSTD);
                    }
                    else
                    {
                        _Duration = (pDataContract.End.Value - pDataContract.Start.Value).GetTotalMinutes();

                        _EndTime = pDataContract.Start.Value.AddMinutes((double)_Duration.Value);
                    }

                    
                    _DurationMonthYearGes = 0;

                }else 
                    if (pDataContract.ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)
					{
                        _Date = pDataContract.Start.Value.Date;
                        _StartTime = pDataContract.Start.Value;
                        _EndTime = pDataContract.End.Value;				    
                        _EditableEndDate = pDataContract.End.Value;

					    if (pDataContract.DurationInStunden == ZeiterfassungsDauer.Stunden)
					    {
					        _DurationSTD = (decimal) (pDataContract.End.Value - pDataContract.Start.Value).TotalHours;
					        _Duration = _DurationSTD;
					    }
					    else
					    {
                        _DurationSTD = (pDataContract.End.Value - pDataContract.Start.Value).GetTotalMinutes();
					    }

					    //_Duration = _DurationSTD;
                    _DurationMonthYearGes = 0;
					}
                    else if (pDataContract.ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitMonatJahr)
					{


                        _Date = pDataContract.Start.Value.Date;
                        _StartTime = pDataContract.Start.Value;
                        _EndTime = pDataContract.End.Value;		

                        _DurationMonthYearGes = (decimal)(pDataContract.End.Value - pDataContract.Start.Value).TotalHours; 
                        _OnlyMonth = pDataContract.Start.Value.ToString("MMMM");
                        _OnlyYear = pDataContract.Start.Value.ToString("yyyy");

					    _Duration = 0;
					    _DurationSTD = 0;
					}

                
                _Notice = pDataContract.Notice;
                _Notice2 = pDataContract.Notice2;
                _Notice3 = pDataContract.Notice3;
                _Notice4 = pDataContract.Notice4;
                _Notice5 = pDataContract.Notice5;
                _RTFNotice = pDataContract.RTFNotice1;
                _RTFNotice2 = pDataContract.RTFNotice2;
                _RTFNotice3 = pDataContract.RTFNotice3;
                _RTFNotice4 = pDataContract.RTFNotice4;
                _RTFNotice5 = pDataContract.RTFNotice5;
                _ServiceDescription = pDataContract.ServiceDescription;
                _Employee = pDataContract.Employee;
                _Customer = pDataContract.Customer;
                _SupportConcept = pDataContract.SupportConcept;
                _CostBearer = pDataContract.CostBearer;
                _ServiceDescription = pDataContract.ServiceDescription;
                _Category = pDataContract.ServiceDescription.Category;
                _RoundedDuration = pDataContract.RoundedDuration;             
                _InsertedOn = pDataContract.InsertedOn;
                _InsUser = pDataContract.InsUser;
                _GroupEmployeeCount = pDataContract.GroupEmployeeCount;
                _GroupPersonCount = pDataContract.GroupPersonCount;
                _GroupRoundedDuration = pDataContract.GroupRoundedDuration;
                _GroupOid = pDataContract.GroupOid;
                _ServiceRecordType = pDataContract.ServiceRecordType;
                _DistanceInMeter = pDataContract.DistanceInMeter;

                _DurationInStunden = pDataContract.DurationInStunden;
                _ServiceRecordFormat = pDataContract.ServiceRecordFormat;
                _SignatureOid = pDataContract.SignatureOid;

                if (pDataContract.Goals != null)
                {
                    _SelectedGoals = new ObservableSortCollection<ValueListEntryDC>(pDataContract.Goals, Comparer.ValueListEntryDCComparer);
                }

                SelectedGoals.CollectionChanged += (s, e) => StoreDirtyInformation(!SelectedGoals.ContainsSameItemsAs(pDataContract.Goals), PropertyName_SelectedGoals);
            }
            else
            {
                _Date = DateTime.Now.Date;
				_EditableEndDate = DateTime.Now.Date;
                _StartTime = NULL_TIME;
                _Duration = null;
            }

            if (pDataContract.ServiceRecordType == ServiceRecordTypeId.Wohnheimbuchung)
            {
                _EditAllowed = _DeleteAllowed = false;
            }
        }

        protected override ServiceRecordDC MapToDataContract(ServiceRecordDC pDataContract, bool doCommit)
        {
            return CopyToDataContract(pDataContract);
        }

        private ServiceRecordDC CopyToDataContract(ServiceRecordDC pDataContract)
        {
            var srf = ServiceRecordFormat;           

            if (BeWoApp.AppSettings.IsEndDateVisible && srf == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitEndDatum)  
            {             
                pDataContract.Start = Date;

                decimal endduration = 0;
                
                //pDataContract.End = EditableEndDate;

                if (_DurationSTD != null){
                    if (_DurationInStunden == ZeiterfassungsDauer.Stunden)
                    {
                        var dura = DurationSTD.Value * 60;
                        decimal roundedDuration = Math.Round(dura, MidpointRounding.AwayFromZero);

                        RoundedDuration = roundedDuration;              
                        endduration = roundedDuration;
                    }
                    else
                    {
                        var dura = DurationSTD.Value;
                        decimal roundedDuration = Math.Round(dura, MidpointRounding.AwayFromZero);

                        RoundedDuration = roundedDuration;
                        endduration = roundedDuration;
                    } 
                }

                pDataContract.End = Date.Value.AddMinutes((double)endduration);

                _DurationMonthYearGes = 0;
                _Duration = 0;

                ServiceRecordFormat = ServiceRecordFormate.ZeiterfassungMitEndDatum;
            }
            else if (BeWoApp.AppSettings.IsOnlyYearMonthVisible  && srf == null || ServiceRecordFormat == ServiceRecordFormate.ZeiterfassungMitMonatJahr)
            {
                var dates = DateTime.Parse("1." + OnlyMonth + OnlyYear);

                var StartDatetime = new DateTime(dates.Year, dates.Month,1,0,0,1);
           
                pDataContract.Start = StartDatetime;
               
                pDataContract.End = StartDatetime.AddHours((double)DurationMonthYearGes);

                if (_DurationMonthYearGes != 0)
                {
                    var dura = DurationMonthYearGes.Value * 60;
                    decimal roundedDuration = Math.Round(dura, MidpointRounding.AwayFromZero);

                    RoundedDuration = roundedDuration;
                }

                Date = StartDatetime;

                StartTime = StartDatetime;

                _DurationSTD = 0;
                _Duration = 0;          

                ServiceRecordFormat = ServiceRecordFormate.ZeiterfassungMitMonatJahr;

                _DurationInStunden = ZeiterfassungsDauer.Stunden;
            }
            else
            {         
                var date = Date.Value;

                DateTime time;

                if (StartTime.HasValue)
                    time = StartTime.Value;
                else
                    time = Date.Value.AddSeconds(1);

                pDataContract.Start = new DateTime(date.Year, date.Month, date.Day, time.Hour, time.Minute, time.Second);
                
                decimal duration = 0;
                if (Duration.HasValue)
                {                  
                    duration = Duration.Value;
                }


                if (DurationInStunden == ZeiterfassungsDauer.Stunden)
                {
                    var dura = duration * 60;
                    decimal roundedDuration = Math.Round(dura, MidpointRounding.AwayFromZero);

                    duration = roundedDuration;
                }
                else
                {
                    var dura = duration;
                    decimal roundedDuration = Math.Round(dura, MidpointRounding.AwayFromZero);

                    duration = roundedDuration;
                }

                RoundedDuration = duration;

                _DurationSTD = 0;
                _DurationMonthYearGes = 0;

                pDataContract.End = pDataContract.Start.Value.AddMinutes((double)duration);

                ServiceRecordFormat = ServiceRecordFormate.OriginaleZeiterfassung;
            }

            
            
            pDataContract.Notice = _Notice;
            pDataContract.Notice2 = _Notice2;
            pDataContract.Notice3 = _Notice3;
            pDataContract.Notice4 = _Notice4;
            pDataContract.Notice5 = _Notice5;

            pDataContract.RTFNotice1 = _RTFNotice;
            pDataContract.RTFNotice2 = _RTFNotice2;
            pDataContract.RTFNotice3 = _RTFNotice3;
            pDataContract.RTFNotice4 = _RTFNotice4;
            pDataContract.RTFNotice5 = _RTFNotice5;

            pDataContract.ServiceRecordType = _ServiceRecordType;
            pDataContract.DistanceInMeter = _DistanceInMeter;

            pDataContract.DurationInStunden = _DurationInStunden;
            pDataContract.ServiceRecordFormat = _ServiceRecordFormat;

            pDataContract.Employee = _Employee;
            pDataContract.Customer = _Customer;
            pDataContract.SupportConcept = _SupportConcept;
            pDataContract.CostBearer = _CostBearer;
            pDataContract.RoundedDuration = RoundedDuration;
            pDataContract.ServiceDescription = _ServiceDescription;
            pDataContract.Goals = GetSelectedGoals();

            pDataContract.GroupEmployeeCount = GroupEmployeeCount;
            pDataContract.GroupPersonCount = GroupPersonCount;
            pDataContract.GroupRoundedDuration = GroupRoundedDuration;
            pDataContract.GroupOid = GroupOid;

            return pDataContract;
        }

        private List<ValueListEntryDC> GetSelectedGoals()
        {
            var goals = new List<ValueListEntryDC>();

            AddCheckedGoals(GoalTree, goals);
            

            return goals;
        }

        private static void AddCheckedGoals(IEnumerable<SupportConceptGoalDC> goals, ICollection<ValueListEntryDC> selectedGoals)
        {
            foreach (var item in goals)
            {
                if (item.Children == null || item.Children.Count == 0)
                {
                    if (item.IsChecked)
                    {
                        selectedGoals.Add(item.GoalEntryDC);
                    }
                }
                else
                {
                    AddCheckedGoals(item.Children, selectedGoals);
                }
            }
        }

        private void TimeCheck()
        {
            decimal duration = 0;
            if (_Duration.HasValue)
            {
                duration = _Duration.Value;
            
            }            
                 StoreDirtyInformation(
                    AreDifferent(DataContract.End, (_Date.Value + _StartTime.Value.TimeOfDay).AddMinutes((double)duration)) ||
                    AreDifferent(DataContract.Start,_Date.Value + _StartTime.Value.TimeOfDay), "TIME");

          
                if (_StartTime != null)
                {
                    if(_DurationInStunden == ZeiterfassungsDauer.Minuten)
                        _EndTime = _StartTime.Value.AddMinutes((double)duration);
                    else
                        _EndTime = _StartTime.Value.AddHours((double)duration);

                if (_EndTime.Value.Second > 1)
                {
                    _EndTime = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, _EndTime.Value.Hour, _EndTime.Value.Minute, 0);
                }

                FirePropertyChanged(PropertyName_EndTime);
                }
                
        }

        private void TimeCheckMonatJahr()
        {
            //var duration = 0;
            
            decimal duration = 0;
            if (_DurationMonthYearGes.HasValue)
            {
                duration = _DurationMonthYearGes.Value;
            }

            var dates = DateTime.Parse("1." + _OnlyMonth + _OnlyYear);
            var StartDatetime = new DateTime(dates.Year, dates.Month, 1, 0, 0, 1);
                
            StoreDirtyInformation(
               AreDifferent(DataContract.End, StartDatetime.AddHours((double)duration).AddSeconds(1)) ||
               AreDifferent(DataContract.Start, StartDatetime), "TIME");
        }

        private void TimeCheckForDurationSTD()
        {        
            double duration = 0;

            if (_DurationSTD.HasValue) { 
                duration = (double)_DurationSTD.Value;
            }

            //####################### ich glaub das wars ########################## 
            if (_DurationInStunden == ZeiterfassungsDauer.Minuten) 
            {
                if (_StartTime != null && _EndTime != null)
                {
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day,
                        _StartTime.Value.Hour, _StartTime.Value.Minute, _StartTime.Value.Second);

                    _EndTime = _StartTime.Value.AddMinutes(duration);

                    if (_EndTime.Value.Second > 1)
                    {
                        _EndTime = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, _EndTime.Value.Hour , _EndTime.Value.Minute, 0);
                    }

                }



                if (_StartTime == null && _EndTime != null && duration == 0)
                {
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day, _EndTime.Value.Hour, _EndTime.Value.Minute, _EndTime.Value.Second);
                }
                else if (_StartTime == null && _EndTime != null)
                {
                    _StartTime = _EndTime.Value.AddMinutes(duration * -1);
                }


                if (_StartTime != null && _EndTime == null && duration == 0)
                {
                    _EndTime = new DateTime(_EditableEndDate.Value.Year, _EditableEndDate.Value.Month, _EditableEndDate.Value.Day, _StartTime.Value.Hour, _StartTime.Value.Minute, _StartTime.Value.Second);
                }
                else if (_StartTime != null && _EndTime == null)
                {                   
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day,
                        _StartTime.Value.Hour, _StartTime.Value.Minute, _StartTime.Value.Second);

                    _EndTime = _StartTime.Value.AddMinutes(duration);

                    if (_EndTime.Value.Second > 1)
                    {
                        _EndTime = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, _EndTime.Value.Hour, _EndTime.Value.Minute, 0);
                    }
                }



                if (_StartTime == null && _EndTime == null && duration == 0)
                {
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day, 0, 0, 1);
                    _EndTime = new DateTime(_EditableEndDate.Value.Year, _EditableEndDate.Value.Month, _EditableEndDate.Value.Day, 0, 0, 1);
                }
                else if (_StartTime == null && _EndTime == null)
                {
                    //start 1 sek und end duration + 1 sek
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day, 0, 0, 1);

                    _EndTime = new DateTime(_EditableEndDate.Value.Year, _EditableEndDate.Value.Month, _EditableEndDate.Value.Day, 0, 0, 1);
                    _EndTime = _EndTime.Value.AddMinutes(duration);
                }

                _Date = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day, _StartTime.Value.Hour, _StartTime.Value.Minute, _StartTime.Value.Second); 
                _EditableEndDate = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, _EndTime.Value.Hour, _EndTime.Value.Minute, _EndTime.Value.Second);
                
               
                var diff = _EditableEndDate.Value.Subtract(_Date.Value);
                duration = (double)diff.TotalMinutes;


                _DurationSTD = (decimal)duration;
            }
            else if (_DurationInStunden == ZeiterfassungsDauer.Stunden) 
            {
                if (_StartTime != null && _EndTime != null)
                {              
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day,
                        _StartTime.Value.Hour, _StartTime.Value.Minute, _StartTime.Value.Second);

                    _EndTime = _StartTime.Value.AddHours(duration);

                    if (_EndTime.Value.Second > 1)
                    {
                        _EndTime = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, _EndTime.Value.Hour, _EndTime.Value.Minute, 0);
                    }
                }



                if (_StartTime == null && _EndTime != null && duration == 0)
                {
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day, _EndTime.Value.Hour, _EndTime.Value.Minute, _EndTime.Value.Second);
                }
                else if (_StartTime == null && _EndTime != null)
                {
                    _StartTime = _EndTime.Value.AddHours(duration * -1);
                }



                if (_StartTime != null && _EndTime == null && duration == 0)
                {
                    _EndTime = new DateTime(_EditableEndDate.Value.Year, _EditableEndDate.Value.Month, _EditableEndDate.Value.Day, _StartTime.Value.Hour, _StartTime.Value.Minute, _StartTime.Value.Second);
                }
                else if (_StartTime != null && _EndTime == null)
                {
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day,
                       _StartTime.Value.Hour, _StartTime.Value.Minute, _StartTime.Value.Second);

                    _EndTime = _StartTime.Value.AddHours(duration);

                    if (_EndTime.Value.Second > 1)
                    {
                        _EndTime = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, _EndTime.Value.Hour, _EndTime.Value.Minute, 0);
                    }
                }



                if (_StartTime == null && _EndTime == null && duration == 0)
                {
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day, 0, 0, 1);
                    _EndTime = new DateTime(_EditableEndDate.Value.Year, _EditableEndDate.Value.Month, _EditableEndDate.Value.Day, 0, 0, 1);
                }
                else if (_StartTime == null && _EndTime == null)
                {
                    //start 1 sek und end duration + 1 sek
                    _StartTime = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day, 0, 0, 1);

                    _EndTime = new DateTime(_EditableEndDate.Value.Year, _EditableEndDate.Value.Month, _EditableEndDate.Value.Day, 0, 0, 1);
                    _EndTime = _EndTime.Value.AddHours(duration);
                }

                _Date = new DateTime(_Date.Value.Year, _Date.Value.Month, _Date.Value.Day, _StartTime.Value.Hour, _StartTime.Value.Minute, _StartTime.Value.Second);
                _EditableEndDate = new DateTime(_EndTime.Value.Year, _EndTime.Value.Month, _EndTime.Value.Day, _EndTime.Value.Hour, _EndTime.Value.Minute, _EndTime.Value.Second);

                var diff = _EditableEndDate.Value.Subtract(_Date.Value);
                duration = (double)diff.TotalHours;

                _DurationSTD = (decimal)Math.Round(duration,2);
            }

            FirePropertyChanged(PropertyName_DurationSTD);
            FirePropertyChanged(PropertyName_StartTime);
            FirePropertyChanged(PropertyName_EndTime);
            FirePropertyChanged(PropertyName_Date);
            FirePropertyChanged(PropertyName_EditableEndDate);
           
            }     
        #endregion
    }
}