How to delete file from FTP using c#

Description : In this post how to delete file from FTP server using c#

private string DeleteFileFromFTP(string fileName)   
{   
    FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://www.server.com/" + fileName);   
    request.Method = WebRequestMethods.Ftp.DeleteFile;   
    request.Credentials = new NetworkCredential("username", "password");   
       
    using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())   
    {   
        return response.StatusDescription;       
    }   
}

- Above code is delete file from FTP in the code WebRequestMethods is "DeleteFile". when file delete from FTP server it return response and description is "250 File deleted successfully"