Even i passed empty datatable the report will show

Hi Everybody, I used RDLC report for student details. I In RDLC report the left side values is constant like "student Name,Fathername, DOB" etc. When i passed empty datatable the report shown only left side values. If i give any input for particular student then show only that student details also. I got the student details but when i passed empty datatable the report not shown. I used 2010.... How to do Just tell the Solution. Thanks In Advanced ...