private void btnNovo_Click(object sender, RoutedEventArgs e)
        {
            ViewFormulario viewAdicionar = new ViewFormulario();

            _viewModel.atual          = new Model.ClientTypeModel();
            viewAdicionar.DataContext = _viewModel.atual;
            if (viewAdicionar.ShowDialog() == true)
            {
                _viewModel.AdicionarAtual();
            }
        }
 private void btnEditar_Click(object sender, RoutedEventArgs e)
 {
     if (_viewModel.atual != null)
     {
         ViewFormulario viewEditar = new ViewFormulario();
         viewEditar.DataContext = _viewModel.atual;
         if (viewEditar.ShowDialog() == true)
         {
             _viewModel.EditarAtual();
         }
         else
         {
             _viewModel.RestaurarAtual();
         }
     }
 }