How it is possible to create ad hoc reports in Crystal? I mean for the user to generate report at run time: allow selecting fields from a table, he/she wants to be displayed, set grouping, sorting set parameters to a query, etc. I have an experience in Crystal Reports 8.5, Crystal Reports for Visual Studio Net 7/2003, but a little bit confused how I can dynamically display/hide fields, add grouping? If someone provide links to samples (preferably for ASP.NET), I would greatly appreciate it. Thanks in advance.