private void BeginSetup()
 {
     if (SetupProcess.Setup(UserNameTxt.Text, PasswordTxt.Password, (bool)EnableAutoLogoffControl.IsChecked))
     {
         MessageBox.Show("Application successfully installed.");
     }
     else
     {
         MessageBox.Show("Oops!! Something went wrong. Installation Aborted.");
     }
 }
        public MainWindow()
        {
            InitializeComponent();

            if (SetupProcess.IsSetupTracesExists())
            {
                Modify.Visibility  = Visibility.Visible;
                Remove.Visibility  = Visibility.Visible;
                Install.Visibility = Visibility.Hidden;
            }
        }
 private void Modify_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         SetupProcess.RollBack();
         BeginSetup();
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.ToString());
     }
     finally
     {
         Close();
     }
 }
 private void Remove_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         if (SetupProcess.RollBack())
         {
             MessageBox.Show("Application successfully removed.");
         }
         else
         {
             MessageBox.Show("Failed to remove application.");
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.ToString());
     }
     finally
     {
         Close();
     }
 }