Have you added reference for the following references to your project:
- CrystalDecisions.Enterprise.Framework
- CrystalDecisions.Enterprise.Desktop.Report
For sample check out
http://devlibrary.businessobjects.com/BusinessObjectsXI/en/en/BOE_SDK/boesdk_dotNet_doc/doc/boesdk_net_doc/html/SDKFundamentals86.html
http://devlibrary.businessobjects.com/BusinessObjectsXIR2/en/en/BOE_SDK/boesdk_dotNet_doc/doc/boesdk_net_doc/html/BOEProviders_Tutorials8.htmlhttp://support.businessobjects.com/forums/message.asp?fid=259&sk=32&ps=25&pn=1&mid=97304
http://msdn2.microsoft.com/en-us/library/ms227485.aspx