public void Incluir(ModeloCategoria modelo) { SqlCommand cmd = new SqlCommand(); cmd.Connection = conexao.ObjetoConexao; cmd.CommandText = "insert into categoria(cat_nome) values (@nome); select @@IDENTITY;"; cmd.Parameters.AddWithValue("@nome", modelo.CatNome); conexao.Conectar(); modelo.CatCod = Convert.ToInt32(cmd.ExecuteScalar()); conexao.Desonectar(); }