c# WPF Аналог Delphi Application.ProcessMessages и WinForms Application.DoEvents

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1. private void DoEvents()   
2. {   
3.     Application.Current.Dispatcher.Invoke(DispatcherPriority.Background, new ThreadStart(delegate { }));   
4. }   
5.   
6. private void btnDel_Click(object sender, RoutedEventArgs e)   
7. {   
8.     popupLoad.IsOpen = true;   
9.     DoEvents();   
10.     if (eDelRecord != null)   
11.         eDelRecord(this, EventArgs.Empty);   
12.     popupLoad.IsOpen = false;   
13. }