Control.OnInvalidated(InvalidateEventArgs) Method

Definition

Raises the Invalidated event.

C#
protected virtual void OnInvalidated(System.Windows.Forms.InvalidateEventArgs e);

Parameters

e
InvalidateEventArgs

An InvalidateEventArgs that contains the event data.

Remarks

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

The OnInvalidated 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 OnInvalidated(InvalidateEventArgs) in a derived class, be sure to call the base class's OnInvalidated(InvalidateEventArgs) method so that registered delegates receive the event.

Applies to

Product Versions
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
Windows Desktop 3.0, 3.1, 5, 6, 7, 8, 9

See also