• Article

ButtonBase.OnMouseEnter Method

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

Provides class handling for the MouseEnter event that occurs when the mouse enters this control.

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

Syntax

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

protected override void OnMouseEnter(
    MouseEventArgs e
)

Parameters

Exceptions

Exception Condition
ArgumentNullException

e is nulla null reference (Nothing in Visual Basic).

Remarks

When ClickMode is set to Hover, this method raises the Click event.

Notes to Inheritors

If you override OnMouseEnter, always call the base implementation in your OnMouseEnter implementation. Failure to call the base implementation prevents base classes from handling the event with a class handler, which might change the run-time behavior of the final class. You can call the base implementation either before or after your special handling, depending on your requirements.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

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

Platforms

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