public void Update(F6001 f6001)
 {
     using (var con = new SqlConnection(ConnectionString))
     {
         con.Query <int>(UpdateSQL, f6001).SingleOrDefault();
     }
 }
        public void Export(F6001 f6001, string fileName)
        {
            if (f6001 == null)
            {
                throw new NullReferenceException();
            }
            string xml = f6001.ToXML(_service.Societe, _service.Exercice);

            System.IO.File.WriteAllText(fileName, xml, Encoding.UTF8);
        }