public System.ComponentModel.BindingList<Product> ProductsFromCategory(ProductCategory category)
        {
            NHibernate.Expression.LikeExpression likeExpressionDescription = new NHibernate.Expression.LikeExpression("ProductCategory", category);
            BindingList<Product> bList = new BindingList<Product>();
            ICriteria mCriteria = CurrentSession.CreateCriteria(typeof(Product));

            if (category!=null)
                mCriteria.Add(likeExpressionDescription);

            System.Collections.IList prodList = mCriteria.List();

            foreach (Product p in prodList)
            {
                bList.Add(p);
            }
            return bList;
        }