How to get url or web page event in WebBrowserTask in Windows Phone 8 C#.

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Windows

XAML

phone

C#5.0

I had code :

WebBrowserTask webBrowserTask = new WebBrowserTask();

webBrowserTask.Uri = new Uri("http://www.google.com", UriKind.Absolute);

webBrowserTask.Show();


It will go to google page but after that when i go form next or next to next page by google, Then i want to get url of that page.
But i couldn't get it.
WebView Provide it in Windows Phone 8.1. but my app is only in wp 8 and i want solution in WP8.

Please Help...se Help...