CheckBox.OnClick Method (EventArgs)

 
System_CAPS_noteNote

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Raises the Click event.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

protected override void OnClick(
	EventArgs e
)

Parameters

e
Type: System.EventArgs

An EventArgs that contains the event data.

The OnClick method changes the CheckState property. If the ThreeState property is set to true, subsequent clicks of the CheckBox will result in OnClick cycling through all the values of the CheckState enumeration. Otherwise, OnClick switches between Checked and Unchecked.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnClick method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors:

When overriding OnClick in a derived class, be sure to call the base class’s OnClick method so that registered delegates receive the event.

.NET Framework
Available since 1.1
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