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HtmlWindow.Error Event

Occurs when script running inside of the window encounters a run-time error.

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

public event HtmlElementErrorEventHandler Error

HTML pages can contain script code, usually written in JScript or VBScript, that executes when a page is loaded. Error occurs whenever a script encounters a run-time error. Because script code is late-bound, which means that calls against the object are not resolved until run-time, errors can include everything from referencing a null object to calling an undefined property or method.

You can set the Handled property of HtmlElementErrorEventArgs to true in order to prevent the native error dialog box in Internet Explorer from displaying.

For more information about the difference between canceling event bubbling and canceling the default action on an event, see About the DHTML Object Model.

The following code example traps the error that results when a script on an HTML page attempts to access an object that is not defined in the document. The page must be fully loaded before the Error event handler is attached, otherwise the example will not work.

		private void SuppressScriptErrors()
		{
			if (webBrowser1.Document != null)
			{
                webBrowser1.Document.Window.Error += new HtmlElementErrorEventHandler(scriptWindow_Error);
			}
		}
		
		private void  scriptWindow_Error(object sender, HtmlElementErrorEventArgs e)
		{
 			MessageBox.Show("Suppressed error!");
			e.Handled = true;
		}

.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

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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