C#文件流下载保存到本地

[wcj_me]

        public static string HttpDownloadFile(string url, string param, string path)
        {
            byte[] bs = Encoding.UTF8.GetBytes(param);
            // 设置参数
            HttpWebRequest req = WebRequest.Create(url) as HttpWebRequest;
            System.Net.ServicePointManager.Expect100Continue = false;
            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
            req.ContentLength = bs.Length;
            using (Stream reqStream = req.GetRequestStream())
            {
                reqStream.Write(bs, 0, bs.Length);
            }
            //发送请求并获取相应回应数据
            HttpWebResponse response = req.GetResponse() as HttpWebResponse;
            //直到request.GetResponse()程序才开始向目标网页发送Post请求
            Stream responseStream = response.GetResponseStream();

            //创建本地文件写入流
            Stream stream = new FileStream(path, FileMode.Create);

            byte[] bArr = new byte[1024];
            int size = responseStream.Read(bArr, 0, (int)bArr.Length);
            while (size > 0)
            {
                stream.Write(bArr, 0, size);
                size = responseStream.Read(bArr, 0, (int)bArr.Length);
            }
            stream.Close();
            responseStream.Close();
            return path;
        }

发布到IIS上的测试的时候，发现下载不是下载到本地，而是下载到服务器上了，是哪里错了，求大牛指点，下载这块实在不熟

[闭包客]

下载到哪里，由你的 path 参数决定。

[wcj_me]

 string p = "orderInfoJson=" + JsonHelper.ObjectToJSON(param) + "&account=" + ac;
            string url = url_Download;
            string path = @"D:\PeopleOnTravelContract";
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            string res = HttpHelper.HttpDownloadFile(url, p, string.Format(path + @"\{0}.pdf", DateTime.Now.ToString("yyyyMMddHHmmss")));//待定

path没什么问题感觉，就是说直接下载到服务器，而不是客户端，我需要的是下载到客户端，而且创建文件夹也是创建在服务器上。忘了说了，我这个是要用AJAX调用下载的

[xdashewan]

只有js或者a标签之类才能提示下载到客户端，c#程序运行在服务器，当然下载到服务器

[bloodish]

一个例子,照着写就OK download-stream-file-from-url-asp-net

[wcj_me]

急急急~~~~~在线等