修复 ImageViewer.Source 设置为null会报错的问题

修复 https://github.com/irihitech/Ursa.Avalonia/issues/680
2025-09-16 18:02:37 +08:00
parent 7f118d7b1c
commit be08931b47
3 changed files with 29 additions and 2 deletions
--- a/demo/Ursa.Demo/Pages/ImageViewerDemo.axaml.cs
+++ b/demo/Ursa.Demo/Pages/ImageViewerDemo.axaml.cs
@@ -8,4 +8,19 @@ public partial class ImageViewerDemo : UserControl
    {
        InitializeComponent();
    }
+
+    Avalonia.Media.IImage? oldImg;
+
+    private void Button_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
+    {
+        if(viewer.Source!=null)
+        {
+            oldImg = viewer.Source;
+            viewer.Source = null;
+        }
+        else
+        {
+            viewer.Source = oldImg;
+        }
+    }
 }