Hi Eric,
U are right, but i discover that my report will gonna having a problem when i put " SetDataSource(DS.Tables(0))" in my program.
The Error is:
"Error in File C:\.... \report1 .rpt: The request could not be submitted for background processing."

I'd try with VS.NET2003, but everything work perfectly.
My Crystal version is 9.1.9800.0

Any idea on it?

Thanks.
Sean