导出Excel

protected void Page_Load(object sender, EventArgs e)
        {
            // 在此处放置用户代码以初始化页面
            DataView dv = (DataView)Session["SuperMarketNewProjectDataSource"];
            GridView1.DataSource = dv;
            GridView1.DataBind();
            Response.Clear();
            Response.Buffer = true;
            Response.Charset = "utf-8";
            Response.AppendHeader("Content-Disposition", "attachment;filename=SuperMarketNewProject.xls");
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");//设置输出流为简体中文
            Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
            Page.EnableViewState = false;
            System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);
            System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
            System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
            GridView1.RenderControl(oHtmlTextWriter);
            Response.Write(oStringWriter.ToString());
            Response.End();
        }
//如果是用GridView则要下面这代码.DataGrid则不要
        public override void VerifyRenderingInServerForm(Control control)
        {
            //base.VerifyRenderingInServerForm(control);
        }