public void EventHandler(object sender, KeyEventArgs e)
 {
     if (e.Key == Key.Enter)
     {
         string url = Youtube.GetVideoUrlfromID(videoids[ResponseBox.SelectedIndex()]);
         try
         {
             Process.Start("chrome.exe", url);
         }
         catch (Exception)
         {
             Process.Start(url);
         }
         MainWindow.AppWindow.Done();
     }
 }