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HtmlElementEventHandler Delegate

Note: This delegate is new in the .NET Framework version 2.0.

Represents the method that will handle the Click, MouseDown and related events on HtmlDocument, HtmlElement, and HtmlWindow.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)

public delegate void HtmlElementEventHandler (
	Object sender,
	HtmlElementEventArgs e
)
/** @delegate */
public delegate void HtmlElementEventHandler (
	Object sender, 
	HtmlElementEventArgs e
)
JScript supports the use of delegates, but not the declaration of new ones.

Parameters

sender

The source of the event.

e

An HtmlElementEventArgs that contains the event data.

When you create a HtmlElementEventHandler delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event handler delegates, see Events and Delegates.

You must wait until an HTML document has finished loading in order to attach an event handler to the document. If you attempt to attach a handler before loading has completed, the attach operation may fail. The best place to attach event handlers in a new document is in the DocumentCompleted event handler for the WebBrowser control.

The following code attaches event handlers for the MouseDown, MouseMove, and MouseUp events on HtmlDocument. This code sample assumes your project has an instance of the WebBrowser control named WebBrowser1.

private void webBrowser1_DocumentCompleted(object sender, System.Windows.Forms.WebBrowserDocumentCompletedEventArgs e)
{
    WebBrowser1.Document.MouseDown += new HtmlElementEventHandler(Document_MouseDown);
    WebBrowser1.Document.MouseMove += new HtmlElementEventHandler(Document_MouseMove);
    WebBrowser1.Document.MouseUp += new HtmlElementEventHandler(Document_MouseUp);
}

private void Document_MouseDown(object sender, HtmlElementEventArgs e)
{
    // Insert your code here.
}

private void Document_MouseMove(object sender, HtmlElementEventArgs e)
{
    // Insert your code here.
}

private void Document_MouseUp(object sender, HtmlElementEventArgs e)
{
    // Insert your code here.
}

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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