#region 文件下载方法:

private void FileDownload(string FullFileName){

   FileInfo DownloadFile = new FileInfo(FullFileName);

   Response.Clear();

   Response.ClearHeaders();

   Response.Buffer = false;

   Response.ContentType = "application/octet-stream";

   Response.AppendHeader("Content-Disposition","attachment;filename=" + HttpUtility.UrlEncode(DownloadFile.FullName, System.Text.Encoding.UTF8));

   Response.AppendHeader("Content-Length"",DownloadFile.Length.ToString());

   Response.WriteFile(DownloadFile.FullName);

   Response.Flush();

   Response.End();

}

#endregion