How to filter the records in crystal Reports

Question

Hi,
I am working with crystal reports in C#.Net.and i have used crystal report viewer.
In my database somany records are there depending on App_code(Id).In that i have App_codes 1,2,3,4,5,etc

my requirement is I want to show to user only App_code 2 records  only.
please send  me a code briefly.


Help me


Thanks inadvance