public static void Display()
 {
     if (singleton == null)
     {
         singleton = new RegExHelpDialog();
     }
     singleton.Show();
     singleton.Focus();
 }
Esempio n. 2
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 void RegExHelp(object sender, RoutedEventArgs e) => RegExHelpDialog.Display();
 protected override void OnClosed(System.EventArgs e)
 {
     base.OnClosed(e);
     singleton = null;
 }