private void btnprintSalSheet_Click(object sender, RoutedEventArgs e)
        {
            PrintSalarySheetWindow win = new PrintSalarySheetWindow();

            win.ShowDialog();
        }
 private void btnprintSalSheet_Click(object sender, RoutedEventArgs e)
 {
     PrintSalarySheetWindow win = new PrintSalarySheetWindow();
     win.ShowDialog();
 }