Read Data from FTP Server File

public int getFTPData()
    {
        WebClient request = new WebClient();
        string url = "ftp://URL" + "CustStat.csv";
        request.Credentials = new NetworkCredential("username", "password");
        int result = -1;

        try
        {
            //I do not know what to put here in order to read the files.
            //This is the condition I want: If data in CSV exist then result = 0 if not result=1
        }
        catch (WebException e)
        {
            System.Windows.Forms.MessageBox.Show("Error getFTPData: " + e.ToString());
        }

        return result;
    }