GridView选择性导出Excel解决方案

<asp:Button ID="Export" runat="server" CssClass="btn-lit" Text="导出所选" OnClientClick="return getnumberExport()" OnClick="Export_Click"/>

<script type="text/javascript">
function getnumberExport() {
if (ExportCheck()) {
//通过GridView ID获取元素
var gv = document.getElementById("ctl00_ContentPlaceHolder1_gridView");
//获取GridView的Input html
var mycheck = gv.getElementsByTagName("input");
//定义一个新数组
var fam = new Array();
var hg;
var id;
//循环检测checkbox标签，获取每条数据的主键信息
for (var i = 0; i < mycheck.length; i++) {
if (mycheck[i].type == 'checkbox')//hidden
{
//如果checkbox被选中
if (mycheck[i].checked == true) {
var numid = new Object();
hg = gv.rows(i + 1).cells(20).innerHTML;
//substring() 方法用于提取字符串中介于两个指定下标之间的字符。
//LastIndexOf()倒取字符串,从后往前取到指定的字符
hg = hg.substring(hg.lastIndexOf("=") + 1, hg.lastIndexOf("\""));
//获取一条数据的主键
id = gv.rows(i + 1).cells(1).innerHTML;
numid.number = hg;
numid.id = id;
fam.push(numid);
}
}
}
//$.ajaxSetup({
// async: false //设置为同步请求
/