private void ClearPurchasedAndReservedProducts(Product product)
{
DatabaseProductPurchases.RemoveAll(p => p.Id == product.ID);
DatabaseProductReservations.RemoveAll(p => p.Id == product.ID);
}
private void InsertPurchasedProducts(Product product)
{
DatabaseProductPurchases.AddRange(product.PurchasedProducts);
}
private void InsertPurchasedProducts(Product product)
{
DatabaseProductPurchases.AddRange(product.PurchasedProducts.Cast <ProductPurchase>().ToList());
}
