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// Add custom code for MouseDown event.

// Call parent implementation when finished.

base.OnMouseDown(e);

}

}

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While this can be helpful in some circumstances (especially if you are building a custom con-

trol that derives from a standard control), you will often handle events using the standard C# event

syntax (in fact, this is the default behavior of the Visual Studio designers). When you handle events

in this manner, the framework will call your custom event handler once the parent’s implementa-

tion has completed. For example, here is how you can manually handle the MouseDown event:

public partial class MainWindow : Form

{

public MainWindow()

{

MouseDown += new MouseEventHandler(MainWindow_MouseDown);

}

private void MainWindow_MouseDown(object sender, MouseEventArgs e)

{