inital

FasdDesktopUi/Basics/Converter/NullValueToVisibilityConverter.cs

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+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Data;
+
+namespace FasdDesktopUi.Basics.Converter
+{
+    public class NullValueToVisibilityConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null)
+                return Visibility.Collapsed;
+            else if (value is string valueString)
+                if (string.IsNullOrWhiteSpace(valueString))
+                    return Visibility.Collapsed;
+
+            return Visibility.Visible;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}