private void Refresh(object sender, RoutedEventArgs e)
{
DbCategoryAction dbCategoryAction = new DbCategoryAction(RefreshCategories);
dbCategoryAction.BeginInvoke(null, null);
if (categoriesComboBox.SelectedItem != null)
{
DbProductAction dbProductAction = new DbProductAction(RefreshProducts);
dbProductAction.BeginInvoke((Category)categoriesComboBox.SelectedItem, null, null);
}
}
private void CategoriesComboBoxSelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (categoriesComboBox.SelectedItem != null)
{
DbProductAction dbProductAction = new DbProductAction(RefreshProducts);
dbProductAction.BeginInvoke((Category)categoriesComboBox.SelectedItem, null, null);
}
else
{
MessageBox.Show("Выберите категорию");
}
}