We are using "GridViewComboBoxColumn" in RadGridView. It has "ItemsSource" assigned and it opens the drop down while running. Now, the problem is when it is opened, if the "GridViewSelectColumn" is checked/clicked, an error is thrown (as mentioned below).
If we close the control that holds RadGridView while drop down is opened, the same error is noticed. Is there any fix for it? Am I missing something? I apologize for not providng working project right now.
at Telerik.Windows.Controls.PopupPlacement.GetPopupPlacement(DependencyObject obj)
at Telerik.Windows.Controls.Animation.AnimationManager.InvkokeCallbacks(Storyboard storyboard)
at Telerik.Windows.Controls.Animation.AnimationManager.OnStoryboardCompleted(Object sender, EventArgs e)
at MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
Your suggestion will surely be appreciated.