Microsoft 9GD00001 manual Private void button1Clickobject sender, RoutedEventArgs e

230Microsoft Visual Studio 2010: A Beginner’s Guide

using System.Windows.Navigation; using System.Windows.Shapes;

namespace ControlsCS

{

///<summary>

///Interaction logic for MainWindow.xaml

///</summary>

public partial class MainWindow : Window

{

public MainWindow()

{

InitializeComponent();

}

private void button1_Click(object sender, RoutedEventArgs e)

{

}

}

}

VB:

Class MainWindow

Private Sub Button1_Click(

ByVal sender As System.Object,

ByVal e As System.Windows.RoutedEventArgs)

Handles Button1.Click

End Sub

End Class

The Click event handler, just created, is the highlighted method, button1_Click (Button1_Click in VB), that you see in Listing 8-1. We covered delegates and events in Chapter 4, which you can review for a better understanding of how this method handles the Click event. Notice how the VB code shows another way to handle events in VB, by explicitly specifying Handles Button1.Click. Essentially, when a user clicks on the button named button1, this handler will be called. This illustrates the concept of event-driven programming, where you write handlers, such as button1_Click, that run code according