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private void ToExcel(Control ctl)
{
string FileName = "z.xls";
HttpContext.Current.Response.Charset = "UTF-8";
HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;
HttpContext.Current.Response.ContentType = "application/ms-excel";
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + "" + FileName);
ctl.Page.EnableViewState = false;
System.IO.StringWriter tw = new System.IO.StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(tw);
ctl.RenderControl(hw);
HttpContext.Current.Response.Write(tw.ToString());
//到这里将gridview保存到excel表z.xls了, 执行HttpContext.Current.Response.End()后提示将excel保存到客户端,
//会有小框 【打开】【保存】【取消】,可是怎么将表存到服务器呢?我在后面加了SaveAs代码有问题啊!
HttpFileCollection files = HttpContext.Current.Request.Files;
System.Web.HttpPostedFile myFile = files[FileName];
string ppath = @"D:/excel/"+ FileName ;
myFile.SaveAs(ppath);//保存上载文件的内容。
// 这里报错未将对象引用设置到对象的实例。感觉是System.Web.HttpPostedFile myFile = files[FileName];这句的问题,怎么找到gridview保存后的excel文件z.xls保存在服务器上呢?
HttpContext.Current.Response.End();
}