Bugfix for TaggedButtonGrid in combination with AutoCleanForm

TelegramBotBase/Base/FormBase.cs

@@ -447,4 +447,10 @@ public class FormBase : IDisposable
             Controls.Remove(c);
         }
     }
+
+    /// <summary>
+    /// Returns if this instance is a subclass of AutoCleanForm. Necessary to prevent message deletion if not necessary.
+    /// </summary>
+    public bool IsAutoCleanForm() => this.GetType().IsSubclassOf(typeof(AutoCleanForm));
+
 }

TelegramBotBase/Controls/Hybrid/TaggedButtonGrid.cs

@@ -455,7 +455,7 @@ public class TaggedButtonGrid : MultiView
                     if (result.MessageText == "📁")
                     {
                         //Remove button click message
-                        if (DeletePreviousMessage)
+                        if (DeletePreviousMessage && !Device.ActiveForm.IsAutoCleanForm())
                         {
                             await Device.DeleteMessage(result.MessageId);
                         }