导出Excel

/// <summary>

    /// 定义导出Excel的函数

    /// </summary>

    /// <param name="FileType"></param>

    /// <param name="FileName"></param>

    private void Export(string FileType, string FileName)

    {





        GridView1.AllowPaging = false;    //导出分页的全部数据

        GridView1.AllowSorting = false;

        bind();

        Response.Charset = "GB2312";

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

        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());

        Response.ContentType = FileType;

        this.EnableViewState = false;

        StringWriter tw = new StringWriter();

        HtmlTextWriter hw = new HtmlTextWriter(tw);

        GridView1.RenderControl(hw);

        Response.Write(tw.ToString());

        Response.End();

        GridView1.AllowPaging = true;     //导出分页的全部数据

        GridView1.AllowSorting = true;

        bind();

    }

    /// <summary>

    /// 此方法必重写，否则会出错

    /// </summary>

    /// <param name="control"></param>

    public override void VerifyRenderingInServerForm(Control control)

    {

    }

    protected void Button1_Click(object sender, EventArgs e)

    {



        Export("application/ms-excel", "123.xls");



    }


还有由于是文件操作所以要引入名称空间IO和Text
using System.Drawing;
using System.IO;
using System.Text;