crystal report

Question

sir, i'm developing a simple grading system using vb.net..i'm encountering a problem regarding crystal report.
the situation is, i cant view the desired data i want. i used 3 combo boxes to filter the data i want to view..namely grade level, section and school year..here are the sample screen shots i have..

when the button view is clicked, the selected data will appear..like this..


but when i click the generate report button..all the data that was created will appear..like this


how will i solve this problem? is there a certain source code for this action?