Adding objects from business layer to crystal report (c#.net)

I mad开发者_如何学Goe a crystal report using c#.net, we can add only the objects that exist on the project that contains crystal report, is there any way to add .net objects from my business layer to my report and how?

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http://www.highoncoding.com/Articles/558_How_to_Generate_Crystal_Report_Using_Custom_Object_Collection_with_ASP_NET.aspx