如何使用可包含大量数据的报表查看器生成报表

I want to display a report which will generate as employee selected by grid view. If i select 'Select All' check box than all employee data should be through in report and if i select people randomly than only that people data will be produce in report. Please help me out. I done report for single employee but for this i am not getting any idea. Thanks :)I want to display a report which will generate