Changing the connection string programatically

Hello,

I'm developing a Windows Form appliction in managed C++ and I need to show a report with the CrystalReportViewer. I develop with CR for VS2010. They work fine, but my problem now is that I need to change the connection string used by the report at runtime. How can I change the connection string of the report? Some sample?

I have been searching internet for a while but to no avail.

Thanks!