C#向共享文件夹上传及下载文件

//下载文件

public void DownLoadFile(string URL, string DIR)
        {
            WebClient client = new WebClient();
            string FileName = URL.Substring(URL.LastIndexOf("\") + 1);
            string PATH = DIR + FileName;
            try
            {
                WebRequest SC = WebRequest.Create(URL);
            }
            catch
            {
            }
            try
            {
                client.DownloadFile(URL, PATH);
            }
            catch
            {
            }
        }

//上传文件：要设置共享文件夹是否有创建的权限，否则无法上传文件

  public void UpLoadFile(string fileNamePath, string urlPath,string User,string Pwd)
        {
            string newFileName = fileNamePath.Substring(fileNamePath.LastIndexOf(@"") + 1);//取文件名称
            MessageBox.Show(newFileName);
            if (urlPath.EndsWith(@"") == false) urlPath = urlPath + @"";

            urlPath = urlPath + newFileName;

            WebClient myWebClient = new WebClient();
            NetworkCredential cread = new NetworkCredential(User, Pwd, "Domain");
            myWebClient.Credentials = cread;
            FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read);
            BinaryReader r = new BinaryReader(fs);

            try
            {
                byte[] postArray = r.ReadBytes((int)fs.Length);
                Stream postStream = myWebClient.OpenWrite(urlPath);
                // postStream.m
                if (postStream.CanWrite)
                {
                    postStream.Write(postArray, 0, postArray.Length);
                    MessageBox.Show("文件上传成功！","提醒",MessageBoxButtons.OK,MessageBoxIcon.Information);
                }
                else
                {
                    MessageBox.Show("文件上传错误！", "警告", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                }

                postStream.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "错误");
            }

        }

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