private void btnMayIn_Click(object sender, RoutedEventArgs e)
 {
     if (ucMayIn == null)
     {
         ucMayIn = new UserControlLibrary.UCMayIn(mTransit);
     }
     spNoiDung.Children.Clear();
     ucMayIn.Height = spNoiDung.ActualHeight;
     ucMayIn.Width  = spNoiDung.ActualWidth;
     spNoiDung.Children.Add(ucMayIn);
 }
 private void btnMayIn_Click(object sender, RoutedEventArgs e)
 {
     if (ucMayIn == null)
     {
         ucMayIn = new UserControlLibrary.UCMayIn(mTransit);
     }
     spNoiDung.Children.Clear();
     ucMayIn.Height = spNoiDung.ActualHeight;
     ucMayIn.Width = spNoiDung.ActualWidth;
     spNoiDung.Children.Add(ucMayIn);
 }