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How is the easiest way for using parameters

We develop a companie application in Visual Studio 2008 VB. Until now we are using a OpenSource Project for creating reports and prints. But the Reporting engine have now support, so we will change our Reporting Core and use "Crystal Reports for Visual Studio 2008 / Crystal Reports 2008"

Our application have a wrapper for the reporting part. I will descripe in short word the current way and why: The Report-Definition ist a XML-File (like RDL). Our Application will be use in a VPN so we want to collect data taht only be used to the report. Our wrapper create a second XML-File, called RDL-Extension (=RDLX).

With our wrapper we can create Fields to collect user-parameters like "Startdate", "Enddate", "Username" etc. It´s possible to design Paramters that a dynamicly, like if you select the Usergroup "Admins" then the second control have only the names of our admins to select.

If all paramters selected then the wrapper create a SQL-Statement and get the data from the database in a dataset. The dataset will be set as datasource of the report and the report will be shown.

So: it is important for us that only the data that needed will be transferd from database to report and the the user can select in a form all needed paramters bevor he can see/print the report.

Our question: Have CRVS2008 / CR2008 have the needed requirement or must we use our wrapper again? What is the correct way to design the reports to fullfill the importent points?

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