internal override bool CodeHasBeenUsed(Model mod, string code)
{
var cmd = new MySqlCommand();
cmd.CommandText = "SELECT EXISTS(SELECT * FROM vendProducts" +
" WHERE vProd_Code = ?Code)";
cmd.Parameters.AddWithValue("?Code", code);
var result = Serv.ExecuteMySqlScaler(cmd);
return((Convert.ToInt32(result) > 0) ? true : false);
}