private async void bt2_Click_1(object sender, RoutedEventArgs e)
 {
     tbk.Text = (await NewGuide.SelectXmlFile()).ToString();
 }
 private void bt4_Click_1(object sender, RoutedEventArgs e)
 {
     NewGuide.ResetEditXmlFile();
 }
 private void bt1_Click_1(object sender, RoutedEventArgs e)
 {
     NewGuide.CreateXmlFile();
 }