客户端下载

 

  public void Download(string URL, string Dir)
        {
            WebClient client = new WebClient();
            //string fileName = URL.Substring(URL.LastIndexOf("\\") + 1); //被下载的文件名
            string fileName = "key_go.png";

            string Path = Dir + fileName;   //另存为的绝对路径＋文件名

            try
            {
                WebRequest myre = WebRequest.Create(URL);
            }
            catch
            {
                //MessageBox.Show(exp.Message,"Error");
            }

            try
            {
                client.DownloadFile(URL, Path);

            }
            catch(Exception ex)
            {
                MessageBox.Show(ex.Message,"Error");
            }
        }