<Window x:Class="MyFirstWPFApp.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MyFirstWPFApp" Height="336" Width="343"> <Grid> <Button Click="MyClickEvent" VerticalAlignment="Top" HorizontalAlignment="Left" Grid.Column="0" Grid.ColumnSpan="1" Grid.Row="0" Grid.RowSpan="1" Margin="43,61,0,0" Width="75" Height="23" Name="btnGo">Go</Button> </Grid> </Window> //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("Elexzandreia the beautiful!", "Message", MessageBoxButton.OK, MessageBoxImage.Hand); } public Window1() { InitializeComponent(); } } }