thnks Pankaj,that still not workd., i ve found alternate way for that <asp:TemplateField HeaderText="View Resume"> <ItemTemplate> <asp:Hyperlink Text="View" ID="Hyperlink2" NavigateUrl=<%#"javascript:my_window=window.open('ResumeDetails.aspx?cand_id=" + DataBinder.Eval(Container.DataItem,"cand_id").ToString() + "&rrf_id=" + DataBinder.Eval(Container.DataItem,"rrf_id").ToString() + "','my_window','toolbar=no, location=no, titlebar=no, linkbar=no, directories=no, status=yes, menubar=no, scrollbars=yes, resizable=yes, width=800, height=600, copyhistory=no');my_window.focus()" %> Runat="Server"> </asp:Hyperlink> </ItemTemplate> <ItemStyle HorizontalAlign="Center" /> </asp:TemplateField>