//File:Window.xaml.cs using System; using System.Collections.Generic; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; namespace MyFirstWPFApp { public partial class Window1 : System.Windows.Window { private void MyClickEvent(object sender, RoutedEventArgs e) { MessageBox.Show("A!", "Message", MessageBoxButton.OK, MessageBoxImage.Hand); } public Window1() { InitializeComponent(); } } }