build crystal report from xml file

hi u all,

i have tried to make a crystal report file using a xml file that generated from a dataset via coding (vb2005 express edition). that rpt file then i use to view the data that i query from database mssql. the problem is whenever i set property 'report source' of 'report viewer', the program will generate error message "Failed to load database information". how can i fix it?

i appreciate all kinds of suggestion. fyi, if i make the data of the rpt file static, then the error won't happen.

for xml, how must i set the logoninfo?