/// <summary>

        /// 下载文件到本地   2017-05-31

        /// </summary>

        /// <param name="DownloadPath">本地下载目录</param>

        /// <param name="FullFilePath">下载地址</param>

        /// <param name="FileName">文件名</param>

        /// <returns></returns>

        private void DownLoadSoft(string DownloadPath, string FullFilePath, string FileName)

        {

            ParameterizedThreadStart s = new ParameterizedThreadStart(DownLoadSoftAu);

            Thread thread = new Thread(s);

            thread.IsBackground = true;

            thread.Start(new object[] { DownloadPath, FullFilePath, FileName });

            thread.Join();

        }

        private void DownLoadSoftAu(object obj)

        {

            string DownloadPath = ((object[])obj)[].ToString().Trim();

            string FullFilePath =((object[])obj)[].ToString().Trim();

            string FileName = ((object[])obj)[].ToString().Trim();

            try

            {

                if (!Directory.Exists(DownloadPath))

                {

                    Directory.CreateDirectory(DownloadPath);

                }

                using (FileStream fs = new FileStream(DownloadPath + FileName, FileMode.Create, FileAccess.Write))

                {

                    //创建请求

                    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(FullFilePath);

                    //接收响应

                    HttpWebResponse response = (HttpWebResponse)request.GetResponse();

                    //输出流

                    Stream responseStream = response.GetResponseStream();

                    byte[] bufferBytes = new byte[];//缓冲字节数组

                    int bytesRead = -;

                    while ((bytesRead = responseStream.Read(bufferBytes, , bufferBytes.Length)) > )

                    {

                        fs.Write(bufferBytes, , bytesRead);

                    }

                    //关闭写入

                    fs.Flush();

                    fs.Close();

                }

            }

            catch (Exception exp)

            {

                //返回错误消息

            }

        }