private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {
            UsuariosClass usuarios = new UsuariosClass();

            LicencaGrid.ItemsSource = usuarios.ExibirDadosTabela("select use_bool, licence from licences").DefaultView;

            LicencaGrid.Columns[0].Header = "Em Uso";
            LicencaGrid.Columns[0].Width  = 100;
            LicencaGrid.Columns[1].Header = "Licenças";
            LicencaGrid.Columns[1].Width  = 300;
        }
        private void UserControl_Loaded(object sender, System.Windows.RoutedEventArgs e)
        {
            UsuariosClass user = new UsuariosClass();

            ManutencaoGrid.ItemsSource       = user.ExibirDadosTabela("select cod_cliente, cliente, maintenance_bool, menssage, backsystem_prev from clientes").DefaultView;
            ManutencaoGrid.Columns[0].Header = "Codigo";
            ManutencaoGrid.Columns[1].Header = "Cliente";
            //ManutencaoGrid.Columns[2].Header = "Ativo";
            ManutencaoGrid.Columns[3].Header = "Menssagem";
            ManutencaoGrid.Columns[3].Width  = 300;
            ManutencaoGrid.Columns[4].Header = "Retorno";
        }