Control.OnMouseWheel Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Called before the MouseWheel event occurs to provide handling for the event in a derived class without attaching a delegate.

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


Protected Overridable Sub OnMouseWheel ( _
    e As MouseWheelEventArgs _
protected virtual void OnMouseWheel(
    MouseWheelEventArgs e



The OnMouseWheel method is called before any event handler for the MouseWheel event is called. This method enables derived classes to handle the MouseWheel event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.