How to integrate asp.net web forms with asp.net mvc 2 application

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C#

C#4.0

Hi....
How to integrate asp.net web forms with asp.net crystal reports....
i want that for creating crystal reports.... i developing the application using mvc application..but crystal reports not supports the mvc application... thats why i want to integrate the asp.net web forms in to my application... i searched some thing ... but i am not clear about that... pls anyone help me....