Open offline html file programmatically in windows phone 7

I am building an application in windows phone 7. I have some user guide in HTML. I want to use a web-browser to open these file开发者_C百科s whenever user touches Help menu. But I don't know how to get the local URLs of these files. Could you help me please?

Thanks so much!

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You can navigate to HTML stored in isolated storage using a Relative Uri. More details and sample code here.

How to: Display Static Web Content Using the WebBrowser Control for Windows Phone