public void DownLoad(string id) { string[] arrStr = id.Split('/'); string informNo = arrStr[0]; DataTable dtInfo = ContractMan.GetNewDownloadFile(informNo); if (dtInfo.Rows[0][0].ToString() != "") { string fileName = dtInfo.Rows[0]["FileName"].ToString(); //客户端保存的文件名 string filePath = System.Configuration.ConfigurationSettings.AppSettings["UPProject"] + "\\" + dtInfo.Rows[0]["FileInfo"] + "\\" + fileName; //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(); } }