Web文件下载

 

            string strFileName = Request["FileName"];
            string strPath = Server.MapPath(@"WorkItemXml") + "/";
            Response.ContentType = "image/jpeg";
            Response.AddHeader("Content-Disposition", "attachment;FileName=" + HttpUtility.UrlEncode(strFileName, Response.HeaderEncoding));
            Response.TransmitFile(Server.MapPath(@"images/" + strFileName));
            Response.End();

可以直接下载文件。