private void Login(object sender, RoutedEventArgs e)
 {
     this.Password.Password = "******";
     this.Campus.Text       = "1";
     if (Campus.Text != string.Empty && Password.Password != string.Empty && Password.Password.Length >= 3)
     {
         try
         {
             Campus campus = CampusService.GetCampus(Campus.Text.ToString());
             if (campus != null)
             {
                 if (campus.Password.Equals(Password.Password.ToString()))
                 {
                     AuthenticationManager.Login(campus);
                     MainWindow mw = new MainWindow();
                     //mw.Owner = this;
                     this.Close();
                     mw.ShowDialog();
                 }
                 else
                 {
                     MessageBoxResult msgr = MessageBox.Show("Invalid password or campus!", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
                 }
             }
             else
             {
                 MessageBoxResult msgr = MessageBox.Show("Invalid password or campus!", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
             }
         }
         catch (Exception ex)
         {
             Console.WriteLine(ex.Message);
             MessageBoxResult msgr = MessageBox.Show("Invalid password or campus!", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
         }
     }
     else
     {
         MessageBoxResult msgr = MessageBox.Show("Invalid password or campus!", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
     }
 }