Silverlight has WebBrowser andWebBrowserBrush controls which are designed to work together to display rich HTML content in a Silverlight application.

The following example shows how to set the HTML content for a WebBrowser using the Source property.

<Grid>
    <WebBrowser Source="http://live.intersoftpt.com/" x:Name="WB1"/>
</Grid>

Please note that WebBrowser is enabled only for Out-of-Browser applications and applications running with elevated permissions in Internet Explorer. In non Out-of-Browser application, the WebBrowser will be shown as the following screenshot.

Hope this helps.

I want to use in browser(IE) only. Is there any other way to show the existing Aspx pages other than Webbrowser.

Please help

Hello Shri,

Sure, you can. As Yudhiy has mentioned, it is correct. It will open your existing .aspx in new webbrowser/tab (IE or moz). However, you could not open .aspx in our ClientUI control such as UXWindow or UXFrame.

Regards,
Handy