Passing an object(control) in session from one page to another

I need to pass a Infragistics ultrawebtree from a page to another. I used Session("data") for this and then I just access it from another page. But when  I assign the session value after casting to a Infragistics ultrawebtree control in my second page, it doesnot build the tree structure and it is invisibile. Is I am wroung in this approach, is there any other way to pass the entire tree structure from one page and display it into another page. Any help is appreciated
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