Neuerstellung

- Quelle: https://github.com/oxyplot/oxyplot

Source/Examples/WPF/ExampleBrowser/NotNullVisibilityConverter.cs

@@ -0,0 +1,28 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="NotNullVisibilityConverter.cs" company="OxyPlot">
+//   Copyright (c) 2020 OxyPlot contributors
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace ExampleBrowser
+{
+    using System;
+    using System.Globalization;
+    using System.Windows;
+    using System.Windows.Data;
+
+    public sealed class NotNullVisibilityConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return value == null
+                ? Visibility.Collapsed
+                : Visibility.Visible;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new InvalidOperationException();
+        }
+    }
+}