diff --git a/Pilz.UI.Telerik/Dialogs/RadFlyoutBase.Statics.cs b/Pilz.UI.Telerik/Dialogs/RadFlyoutBase.Statics.cs
index cd4420f..2a4ae26 100644
--- a/Pilz.UI.Telerik/Dialogs/RadFlyoutBase.Statics.cs
+++ b/Pilz.UI.Telerik/Dialogs/RadFlyoutBase.Statics.cs
@@ -22,8 +22,8 @@ partial class RadFlyoutBase
         remove => flyoutCloseHandlers.Remove(value);
     }
 
-    private static readonly List<FlyoutCreatedEventHandler> flyoutCreatedHandlers = new();
-    private static readonly List<FlyoutClosedEventHandler> flyoutCloseHandlers = new();
+    private static readonly List<FlyoutCreatedEventHandler> flyoutCreatedHandlers = [];
+    private static readonly List<FlyoutClosedEventHandler> flyoutCloseHandlers = [];
 
     private static object? tagToAssign = null;
     private static string? titleToAssing = null;
@@ -55,7 +55,7 @@ partial class RadFlyoutBase
             if (dialogBase is ILoadContent iLoadContent)
                 iLoadContent.LoadContent();
 
-            foreach (var args in flyoutCreatedHandlers)
+            foreach (var args in flyoutCreatedHandlers.ToArray())
             {
                 if (ParentContext != null)
                     ParentContext?.Invoke(args, eventArgs);
@@ -71,7 +71,7 @@ partial class RadFlyoutBase
         {
             var eventArgs = new FlyoutClosedEventArgs((RadFlyoutBase)e.Content);
 
-            foreach (var args in flyoutCloseHandlers)
+            foreach (var args in flyoutCloseHandlers.ToArray())
             {
                 if (ParentContext != null)
                     ParentContext?.Invoke(args, eventArgs);