需要实现用FTP把文件上传到FTP的服务器上，试了以下的方式都不行，请问在C#该如何写呢?  代码如下:

private void MainForm_Load(object sender, System.EventArgs e)
        {
            
            System.Diagnostics.Process proc = new System.Diagnostics.Process();
            proc.EnableRaisingEvents=false;
            proc.StartInfo.UseShellExecute = true;
            proc.StartInfo.RedirectStandardOutput = true;
            proc.StartInfo.FileName="ftp.exe";
            proc.StartInfo.Arguments="open ftpserver";
            proc.StartInfo.Arguments="username";
            proc.StartInfo.Arguments="password";
            proc.StartInfo.Arguments="prompt off";
            proc.StartInfo.Arguments="cd folder-in-ftp-server";
            proc.StartInfo.Arguments="lcd folder-in-local";
            proc.StartInfo.Arguments="mput *.jpg";
            proc.StartInfo.Arguments="bye";
            proc.StartInfo.CreateNoWindow = true;
            proc.Start();
            proc.WaitForExit();
            Close();
}