rdlc report detatils displas when user is selected from ddl

Question

AOA,i have a web application,and i have created rdlc report that works fine.
i want to create a new form in which i have a drop down where all employee are getting from database along all of them data is enter using sql database and for rdlc report dataset are working fine.
how can i show rdlc details for user on that page when that employee is selected from the drop down list.using c#