ComboBox.OnMeasureItem(MeasureItemEventArgs) Method

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Source:

ComboBox.cs

Raises the MeasureItem event.

C#

protected virtual void OnMeasureItem(System.Windows.Forms.MeasureItemEventArgs e);

Parameters

e

MeasureItemEventArgs

The MeasureItemEventArgs that was raised.

Remarks

This method is called each time an owner-drawn ComboBox item needs to be drawn and before OnDrawItem is called. For more information, see MeasureItem.

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

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

Applies to

See also

• MeasureItemEventArgs
• MeasureItem