private void FillCombinationProduct(int productID)
{
List<CombinationProduct> productCombinations =
CombinationProductManager.GetCombinationProductsByProductId(productID, CMSContext.LanguageID);
gvCombinationProducts.DataSource = productCombinations;
gvCombinationProducts.DataBind();
BeginCombinationProductAddMode();
}