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HtmlElementEventHandler Delegate

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
)

Parameters

sender
Type: System.Object

The source of the event.

e
Type: System.Windows.Forms.HtmlElementEventArgs

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 Handling and Raising Events.

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.
		}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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