xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF" Height="100" Width="300"> Button three is the default button.
//File:Window.xaml.cs using System.Windows; using System.Windows.Controls; namespace WpfApplication1 { public partial class Window1 : Window { public Window1() { InitializeComponent(); } private void SharedButtonClickHandler(object sender,RoutedEventArgs e) { Button source = e.OriginalSource as Button; if (source != null) { MessageBox.Show("You pressed " + source.Name, Title); } } } }