Problem in report viewer binding in WPF

Hi Everybody,

                 I'm using reportviewer in my project. In datagrid i list the employee details. And when i check some of the rows in datagrid, for that employees i have show payslip on one report viewer by separate page.

Now i have to show payslip for John and James.

Now my problem is i cant bind more than one record in reportviewer. Which i click the row only displaying in reportviewer. I want for those which are all the rows are checked.

I'm getting output for this in crystal report.

But i want in reportviewer.

I dont know what mistake i did it may be coding are in designing the report viewer.

When i using report viewer i got payslip for one employee with 6 page.I dont know how to avoid this.

Please help me...