How To Get Width and Height from the Window.Open Method Inside the WebBrowser Host by Using Visual C# .NET (313966)

SUMMARY

This step-by-step article shows you how to get the new width and height of the WebBrowser control and how to resize your form accordingly.

In a Visual C# .NET application, WebBrowser control navigates to an .html page that calls the window.open method to open a new window. In certain situation, developers want to resize the width and the height of the application according to the size of the new window. To do so, you can obtain the values that are passed by the width and height argument of window.open in the NewWindow2 event.

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Requirements

The following list outlines the recommended hardware, software, network infrastructure, and service packs that you need for this procedure:

• Microsoft Visual Studio .NET
• Microsoft Internet Explorer 5.5 Service Pack 2 or later

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Description of Technique

You need to add a reference to Microsoft HTML Object Library (MSHTML) in your project. You have to handle the WindowSetWidth and WindowSetHeight events that are exposed by the Mshtml.HTMLDocumentEvents2_WindowSetWidthEvent and Mshtml.HTMLDocumentEvents2_WindowSetHeightEvent interfaces respectively.

In your event handler functions, the new width and height of the WebBrowser control are passed in through the second parameter; you need to retrieve the new values and to resize your form to the appropriate width and height.

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Code Sample

public Form1()
{
        // Required for Windows Form Designer support
	InitializeComponent();
			
        // Webbrowser Event handler
	this.axWebBrowser1.WindowSetHeight += new AxSHDocVw.DWebBrowserEvents2_WindowSetHeightEventHandler(this.axWebBrowser1_WindowSetHeight);
	this.axWebBrowser1.WindowSetWidth += new AxSHDocVw.DWebBrowserEvents2_WindowSetWidthEventHandler(this.axWebBrowser1_WindowSetWidth);
	this.axWebBrowser1.NewWindow2 += new AxSHDocVw.DWebBrowserEvents2_NewWindow2EventHandler(this.axWebBrowser1_NewWindow2);
}

private void axWebBrowser1_WindowSetHeight(object sender, AxSHDocVw.DWebBrowserEvents2_WindowSetHeightEvent e)
{
	int heightDiff;
	heightDiff = this.Height - this.axWebBrowser1.Height;
	this.Height = heightDiff + e.height;
}

private void axWebBrowser1_WindowSetWidth(object sender, AxSHDocVw.DWebBrowserEvents2_WindowSetWidthEvent e)
{
	int widthDiff;
	widthDiff = this.Width - this.axWebBrowser1.Width;
	this.Width = widthDiff + e.width;
}

private void axWebBrowser1_NewWindow2(object sender, AxSHDocVw.DWebBrowserEvents2_NewWindow2Event e)
{
	Form1 newWindow = new Form1();
	newWindow.Show();
	newWindow.axWebBrowser1.RegisterAsBrowser = true;
	e.ppDisp = newWindow.axWebBrowser1.Application;
}
				

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