// <summary>

        /// 将本地文件上传到指定的服务器(HttpWebRequest方法)

        /// </summary>

        /// <param name="address">文件上传到的服务器</param>

        /// <param name="fileNamePath">要上传的本地文件（全路径）</param>

        /// <param name="saveName">文件上传后的名称</param>

        /// <param name="progressBar">上传进度条</param>

        /// <returns>成功返回1，失败返回0</returns>

        private static String Upload_Request(string address, string fileNamePath, string saveName /*, ProgressBar progressBar**/)

        {

            // 要上传的文件

            FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);

            BinaryReader r = new BinaryReader(fs);

            //时间戳

            string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");

            byte[] boundaryBytes = Encoding.ASCII.GetBytes("/r/n--" + strBoundary + "/r/n");

            //请求头部信息



            StringBuilder sb = new StringBuilder();

            sb.Append("--");

            sb.Append(strBoundary);

            sb.Append("/r/n");

            sb.Append("Content-Disposition: form-data; name=\"file\";filename=\""+saveName+"\"/r/n");

            sb.Append("Content-Type: application/octet-stream /r/n/r/n");



            string strPostHeader = sb.ToString();

            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);

            // 根据uri创建HttpWebRequest对象

            HttpWebRequest httpReq = (HttpWebRequest)WebRequest.Create(new Uri(address));

            httpReq.KeepAlive = true;

            httpReq.Method = Convert.ToString(Method.POST);

            //对发送的数据不使用缓存

            httpReq.AllowWriteStreamBuffering = false;

            //设置获得响应的超时时间（300秒）

            httpReq.Timeout = 300000;

            httpReq.ContentType = "multipart/form-data: name=\"Upload\" boundary=" + strBoundary;

            long length = fs.Length + postHeaderBytes.Length + boundaryBytes.Length;

            long fileLength = fs.Length;

            httpReq.ContentLength = length;

            try

            {

                //progressBar.Maximum = int.MaxValue;

                //progressBar.Minimum = 0;

                //progressBar.Value = 0;

                //每次上传4k

                int bufferLength = 4096;

                byte[] buffer = new byte[bufferLength];

                //已上传的字节数

                long offset = 0;

                //开始上传时间

                DateTime startTime = DateTime.Now;