<script language=javascript> function doPrint() ...{ bdhtml=window.document.body.innerHTML; sprnstr="<!--startprint-->"; eprnstr="<!--endprint-->"; prnhtml=bdhtml.substr(bdhtml.indexOf(sprnstr)+17); prnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr)); window.document.body.innerHTML=prnhtml; window.print(); } </script> 打印预览:<br /> <!--startprint--> <asp:GridView ID="cdayinyulan" runat="server"> </asp:GridView> <!--endprint-->