Article
11/18/2011

ComboBox.OnMouseLeftButtonDown Method

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

Provides handling for the MouseLeftButtonDown event that occurs when the left mouse button is pressed while the mouse pointer is over the combo box.

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

Syntax

'Declaration
Protected Overrides Sub OnMouseLeftButtonDown ( _
    e As MouseButtonEventArgs _
)

protected override void OnMouseLeftButtonDown(
    MouseButtonEventArgs e
)

Parameters

e
Type: System.Windows.Input.MouseButtonEventArgs
The event data.

Remarks

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

This implementation marks the MouseLeftButtonDown event as handled by setting the Handled property of the event data to true. In addition, this implementation sets the IsDropDownOpen property to true.

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.

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