private void button1_Click(object sender, RoutedEventArgs e)
        {
            AddItem it = new AddItem();
            EntradaPorValidacionViewModel entrada = this.DataContext as EntradaPorValidacionViewModel;

            it.DataContext = entrada.CreateCatalogItemViewModel();
            it.ShowDialog();
        }
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            this.comboBoxClienteDestino.IsEnabled = false;
            AddItem it = new AddItem();
            EntradaDesinstalacionViewModel entrada = this.DataContext as EntradaDesinstalacionViewModel;

            it.DataContext = entrada.CreateCatalogItemViewModel();
            it.ShowDialog();
        }
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            this.radioButtonProveedor.IsEnabled     = false;
            this.radioButtonCliente.IsEnabled       = false;
            this.comboBoxProveedorDestino.IsEnabled = false;
            this.comboBoxClienteDestino.IsEnabled   = false;

            AddItem it = new AddItem();
            EntradaPrestamoViewModel entrada = this.DataContext as EntradaPrestamoViewModel;

            it.DataContext = entrada.CreateCatalogItemViewModel();
            it.ShowDialog();
        }