HttpRequest获取文件流,HttpResponse输出文件流

HttpResponse输出文件:

            Response.Clear();

            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=aaa.csv"); 

             var sw = new StreamWriter(response.OutputStream);

            //cc.Write<CustomerData>(list, sw, csvFileDesc);

            sw.Flush();

            sw.Close(); 

 HttpRequest获取文件:

 var sr = new StreamReader(request.InputStream);