<Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF" Height="100" Width="300"> <DockPanel> <TextBox DockPanel.Dock="Top" Margin="5">Button three is the default button.</TextBox> <StackPanel HorizontalAlignment="Center" DockPanel.Dock="Bottom" Orientation="Horizontal"> <Button Click="SharedButtonClickHandler" Content="Button One" Name="btnOne" Width="75" /> <Button Click="SharedButtonClickHandler" Content="Button Two" Name="btnTwo" Width="75" /> <Button Click="SharedButtonClickHandler" Content="Button Three" IsDefault="True" Margin="5" Name="btnThree" /> </StackPanel> </DockPanel> </Window> //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); } } } }