this method on dataNavigateUrFromatSting that i gave it a parameter for the popup() window it doesn't work but it's open with no data but when i gave it just the formname with the datalink its work correctly so how i can pass to it the width and the height and menubar and toolbar for the new popup window thanks alot for ur hlep
<asp:HyperLinkField Target="_blank" HeaderText="MOP Id" DataTextField="mopId" DataNavigateUrlFormatString="javascript:varwin=window.open('frmMopDetail.aspx?mopId={0}', 'null', 'width=700 height=600');" DataNavigateUrlFields="mopId">