直接打印在GridView中的内容

protected void btnExport_Click(object sender, EventArgs e)
    {
        Baosight.EMS.RealManage.BusinessLogic.DefaultImpl.MediumManager aa = new Baosight.EMS.RealManage.BusinessLogic.DefaultImpl.MediumManager();
        EnergyT energyName = aa.GetEnergyById(strEnergy);
        ToExcelFile(this.Page, "实时数据查询" + "_" + energyName.Name + "_" + strStartTime.Substring(0, 10) + "--" + strEndTime.Substring(0, 10));
    }
    private void ToExcelFile(System.Web.UI.Control ctl, string tablename)
    {
        string ExportType = "xls";
        Response.Clear();
        Response.AddHeader("content-disposition", "attachment;filename=" + "" + System.Web.HttpUtility.UrlEncode(tablename, System.Text.Encoding.UTF8) + "." + ExportType);
        //Response.AddHeader("Content-Disposition", "inline; filename = \"" + "document_attachment.png" + "\""); 
        Response.Charset = "UTF8";
        Response.ContentEncoding = System.Text.Encoding.UTF8;
        Response.ContentType = "application/ms-" + ExportType;
        ctl.Page.EnableViewState = true;
        System.IO.StringWriter stringWrite = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
        grdDisplay.RenderControl(htmlWrite);
        Response.Write(stringWrite.ToString());
        Response.End();

    } 

　　就直接输出了

注：

      当用GridView导出Execl的时候，会发生只能在执行 Render() 的过程中调用 RegisterForEventValidation的错误提示。
有两种方法可以解决以上问题：
1.修改web.config(不推荐)<pages enableEventValidation ="false" ></pages>
2.直接在导出Execl的页面修改

<%@ Page Language="C#" EnableEventValidation = "false" AutoEventWireup="true"

 CodeFile="ExportGridView.aspx.cs" Inherits="ExportGridView" %>

注意泛红部分加入即可。

导入到excel中可能会出现乱码的情况

这时需要替换两处地方

把

 

Response.Charset = "UTF8";
        Response.ContentEncoding = System.Text.Encoding.UTF8;

替换成

Response.Charset = "GB2312";
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");

两种编码都试试应该就能解决。