在ASP.NET中GridView导出Excel的快速方法

此方法最有效，所以贴出来与大家分享

protected void btnOutExcel_Click(object sender, EventArgs e)
{
    if (GridView1.Rows.Count > 0)
    {
        //调用导出方法
        ExportGridViewForUTF8(GridView1, DateTime.Now.ToShortDateString() + ".xls");
    }
    else
    {
        obo.Common.MessageBox.Show(this, "没有数据可导出，请先查询数据!");
    }
}

/// <summary>
/// 重载，否则出现“类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标... ”的错误
/// </summary>
/// <param name="control"></param>
public override void VerifyRenderingInServerForm(Control control)
{
    //base.VerifyRenderingInServerForm(control);
}

/// <summary>
/// 导出方法
/// </summary>
/// <param name="GridView"></param>
/// <param name="filename">保存的文件名称</param>
private void ExportGridViewForUTF8(GridView GridView, string filename)
{

    string attachment = "attachment; filename=" + filename;

    Response.ClearContent();
    Response.Buffer = true;
    Response.AddHeader("content-disposition", attachment);

    Response.Charset = "UTF-8";
    Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
    Response.ContentType = "application/ms-excel";
    System.IO.StringWriter sw = new System.IO.StringWriter();

    HtmlTextWriter htw = new HtmlTextWriter(sw);
    GridView.RenderControl(htw);

    Response.Output.Write(sw.ToString());
    Response.Flush();
    Response.End();

}
        protected void btnOutExcel_Click(object sender, EventArgs e)
        {
            if (GridView1.Rows.Count > 0)
            {
                //调用导出方法
                ExportGridViewForUTF8(GridView1, DateTime.Now.ToShortDateString() + ".xls");
            }
            else
            {
                obo.Common.MessageBox.Show(this, "没有数据可导出，请先查询数据!");
            }
        }

        /// <summary>
        /// 重载，否则出现“类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标... ”的错误
        /// </summary>
        /// <param name="control"></param>
        public override void VerifyRenderingInServerForm(Control control)
        {
            //base.VerifyRenderingInServerForm(control);
        }

        /// <summary>
        /// 导出方法
        /// </summary>
        /// <param name="GridView"></param>
        /// <param name="filename">保存的文件名称</param>
        private void ExportGridViewForUTF8(GridView GridView, string filename)
        {

            string attachment = "attachment; filename=" + filename;

            Response.ClearContent();
            Response.Buffer = true;
            Response.AddHeader("content-disposition", attachment);

            Response.Charset = "UTF-8";
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
            Response.ContentType = "application/ms-excel";
            System.IO.StringWriter sw = new System.IO.StringWriter();

            HtmlTextWriter htw = new HtmlTextWriter(sw);
            GridView.RenderControl(htw);

            Response.Output.Write(sw.ToString());
            Response.Flush();
            Response.End();

        }若出现“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" %>

摘自邱征响的专栏

补充：Web开发 , ASP.Net ,