Chat/ChatController/Converter/StringEmptyToVisibilityConverter.cs

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Data;

namespace ChatController.Converter
{
    public class StringEmptyToVisibilityConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if(value is string text)
            {
                return string.IsNullOrWhiteSpace(text) ? Visibility.Visible : Visibility.Hidden;
            }

            return Visibility.Visible;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}