minor fixes

Pilz.UI.AvaloniaUI/Dialogs/AvaloniaFlyoutBase.axaml.cs

@@ -165,12 +165,12 @@ public partial class AvaloniaFlyoutBase : UserControl
     {
     }
 
-    protected void Close()
+    protected virtual void Close()
     {
         OnClose?.Invoke(this, EventArgs.Empty);
     }
 
-    protected void Close(object? result)
+    protected virtual void Close(object? result)
     {
         Result = result;
         Close();
@@ -181,6 +181,11 @@ public partial class AvaloniaFlyoutBase : UserControl
         return true;
     }
 
+    protected virtual object? GetResult()
+    {
+        return true;
+    }
+
     protected virtual void SetShowTitlePanel()
     {
         StackPanelHeader.IsVisible = !string.IsNullOrWhiteSpace(Title) || TitleIcon != null;
@@ -189,7 +194,7 @@ public partial class AvaloniaFlyoutBase : UserControl
     protected virtual void ButtonOkay_OnClick(object? sender, RoutedEventArgs e)
     {
         if (ValidateOK())
-            Close(true);
+            Close(GetResult());
     }
 
     protected virtual void ButtonCancel_OnClick(object? sender, RoutedEventArgs e)