< 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 -->