protected void LinkButton1_Click(object sender, EventArgs e)         {             try             {                 //WriteFile实现下载(word)                 string fileName = "qingpingguo.docx";//客户端保存的文件名                 string filePath = Server.MapPath("~\\excel\\" + tb1.Text);//路径                 FileInfo fileInfo = new FileInfo(filePath);                 Response.Clear();                 Response.ClearContent();                 Response.ClearHeaders();                 Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);                 Response.AddHeader("Content-Length", fileInfo.Length.ToString());                 Response.AddHeader("Content-Transfer-Encoding", "binary");                 Response.ContentType = "application/octet-stream";                 Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");                 Response.WriteFile(fileInfo.FullName);                 Response.Flush();                 Response.End();             }             catch (Exception ex)             {                 Response.Write(ex.Message);             }             /*************以下为流方式下载****************/             //string fileName = "aaa.txt";//客户端保存的文件名             //string filePath = Server.MapPath("DownLoad/aaa.txt");//路径             ////以字符流的形式下载文件             //FileStream fs = new FileStream(filePath, FileMode.Open);             //byte[] bytes = new byte[(int)fs.Length];             //fs.Read(bytes, 0, bytes.Length);             //fs.Close();             //Response.ContentType = "application/octet-stream";             ////通知浏览器下载文件而不是打开             //Response.AddHeader("Content-Disposition", "attachment;  filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));             //Response.BinaryWrite(bytes);             //Response.Flush();             //Response.End();         }