Asp.net直接保存文件到客户端

 1        /**//// <summary>
 2        /// 下载文件
 3        /// </summary>
 4        /// <param name="filename">文件物理地址</param>
 5        protected void DownloadFile(string filename)
 6        {
 7            string saveFileName = "test.xls";
 8            int intStart = filename.LastIndexOf("\\")+1;
 9            saveFileName = filename.Substring(intStart,filename.Length-intStart);
10
11            Response.Clear();
12            Response.Charset = "utf-8";
13            Response.Buffer= true;
14            this.EnableViewState = false;
15            Response.ContentEncoding = System.Text.Encoding.UTF8;
16
17            Response.AppendHeader("Content-Disposition","attachment;filename=" + saveFileName); 
18            Response.WriteFile(filename); 
19            Response.Flush();
20            Response.Close();
21
22            Response.End();
23        }