Check file exists and make directories recursively by FTP

FtpUtil.cs

public static class FtpUtil
{
    /// <returns>exists, ok, error message</returns>
    public static (bool, bool, string) FileExists(string ftpUrl, string fileName, string user, string password)
    {
        WebRequest request = WebRequest.Create(ftpUrl);
        request.Credentials = new NetworkCredential(user, password);
        request.Method = WebRequestMethods.Ftp.ListDirectory;

        try
        {
            using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
            {
                if (response.StatusCode != FtpStatusCode.OpeningData)
                {
                    return (false, false, response.StatusDescription);
                }

                using (StreamReader streamReader = new StreamReader(response.GetResponseStream()))
                {
                    List<string> files = new List<string>();
                    string line = streamReader.ReadLine();
                    while (!string.IsNullOrEmpty(line))
                    {
                        files.Add(line);
                        line = streamReader.ReadLine();
                    }

                    return (files.Any(path => Path.GetFileName(path) == fileName), true, "");
                }
            }
        }
        catch (WebException e)
        {
            FtpWebResponse res = (FtpWebResponse)e.Response;
            return (false, false, res.StatusDescription);
        }
    }

    /// <returns>ok, error message</returns>
    public static (bool, string) MakeDirectoryRecursively(string ftpUrl, string path, string user, string password)
    {
        char[] trimChars = { '/' };
        path = path.Trim(trimChars);

        foreach (string dir in path.Split("/"))
        {
            if (!string.IsNullOrEmpty(dir))
            {
                (bool exists, bool ok, string message) = FileExists(ftpUrl, dir, user, password);
                if (!ok) return (false, message);

                ftpUrl = Path.Combine(ftpUrl, dir);

                if (!exists)
                {
                    Console.WriteLine($"ftpUrl: {ftpUrl}");

                    WebRequest request = WebRequest.Create(ftpUrl);
                    request.Credentials = new NetworkCredential(user, password);
                    request.Method = WebRequestMethods.Ftp.MakeDirectory;

                    try
                    {
                        using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
                        {
                            if (response.StatusCode != FtpStatusCode.PathnameCreated)
                            {
                                return (false, response.StatusDescription);
                            }
                        }
                    }
                    catch (WebException e)
                    {
                        FtpWebResponse res = (FtpWebResponse)e.Response;
                        return (false, res.StatusDescription);
                    }
                }
            }
        }
        return (true, "");
    }
}

FluentFTP is much better.
https://github.com/robinrodricks/FluentFTP