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// 注意，在Visual Studio2005平台下，如果使用GridView导出文件，

        //就必须重载VerifyRenderingInServerForm方法

        public override void VerifyRenderingInServerForm(Control control)

        {

        }

        /// <summary>

        ///  导出到文件的方法，

        /// </summary>

        /// <param name="Model">Model=1:导出为Execl，Model=2:导出为Word</param>

        private void toFiles(int Model)

        {

            string strFileName = DateTime.Now.ToString("yyyyMMdd-hhmmss");

            System.Web.HttpContext HC = System.Web.HttpContext.Current;

             HC.Response.Clear();

             HC.Response.Buffer = true;

             HC.Response.ContentEncoding = System.Text.Encoding.UTF8;//设置输出流为简体中文

            if (Model == 1)

            {

                //---导出为Excel文件

                 HC.Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(strFileName, System.Text.Encoding.UTF8) + ".xls");

                 HC.Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。

            }

            else

            {

                //--- 导出为Word文件

                 HC.Response.AddHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(strFileName, System.Text.Encoding.UTF8) + ".doc");

                 HC.Response.ContentType = "application/ms-word";//设置输出文件类型为Word文件。

            }

            System.IO.StringWriter sw = new System.IO.StringWriter();

            System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);

            this.GridView1.RenderControl(htw);

             HC.Response.Write(sw.ToString());

             HC.Response.End();

        }

        //-导出为Excel文件

        protected void ToExecl_Click(object sender, EventArgs e)

        {

            toFiles(1);

        }

        //-导出为Word文件

        protected void Button1_Click(object sender, EventArgs e)

        {

            toFiles(2);

        } 

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/bl_song/archive/2009/07/13/4344895.aspx