title: Go to parent directory in System.Net.FtpClient
body: <p>I'm using <code>System.Net.FtpClient</code> to work with FTP server in my web application.
  After creating a directory and set it as working directory and uploading files in it, I want to go back one step (the parent directory) to do the same for other folders and files, but I don't know how to get the parent and set it as working directory.</p>