Article
11/18/2011

TreeView.OnMouseEnter Method

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

Provides handling for the MouseEnter event.

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

Syntax

'Declaration
Protected Overrides Sub OnMouseEnter ( _
    e As MouseEventArgs _
)

protected override void OnMouseEnter(
    MouseEventArgs e
)

Parameters

e
Type: System.Windows.Input.MouseEventArgs
A MouseEventArgs that contains the event data.

Remarks

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

This implementation does not change the handled state of the event.

Notes to Inheritors

If you override OnMouseEnter, you can prevent registered delegates from receiving events by setting Handled to true. For more information about routed events and the Handled property, see Events Overview for Silverlight.

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

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

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