Use this property when you want to access the contents of a Web page displayed in the System.Windows.Forms.WebBrowser control through the HTML document object model (DOM). This is useful, for example, when you want to use Web-based controls in your Windows Forms application.

You can use this property, in combination with the WebBrowser.ObjectForScripting property, to implement two-way communication between a Web page displayed in the System.Windows.Forms.WebBrowser control and your application. Use the HtmlDocument.InvokeScript(string, Object[]) method to call script methods implemented in a Web page from your client application code. Your scripting code can access your application through the window.external object, which is a built-in DOM object provided for host access, and which maps to an object that you specify for the WebBrowser.ObjectForScripting property.

To access the contents of a Web page as a string, use the WebBrowser.DocumentText property. To access the contents of a Web page as a System.IO.Stream, use the WebBrowser.DocumentStream property.