MessageWindow.xaml 的交互逻辑
Inheritance: MahApps.Metro.Controls.MetroWindow
 public static void ShowJryVideoMessage(this Window self, string caption, string message)
 {
     var dlg = new MessageWindow()
     {
         WindowStartupLocation = WindowStartupLocation.CenterOwner,
         Owner = self
     };
     dlg.TitleTextBlock.Text = caption;
     dlg.ContentTextBlock.Text = message;
     dlg.ShowDialog();
 }