private void ProductCategoryComboBox_SelectedIndexChanged(object sender, EventArgs e)
        {
            ProductsGridView.Rows.Clear();

            if (ProductCategoryComboBox.SelectedIndex == 0)
            {
                FoodRepository _DataAccess = new FoodRepository();

                foreach (Food ProductDetail in _DataAccess.RetreiveAllProducts())
                {
                    ProductsGridView.Rows.Add(ProductDetail.FId, ProductDetail.FName, ProductDetail.FPrice, ProductDetail.FCategory, ProductDetail.FDescription, ProductDetail.FPicture);
                }
            }
            else if (ProductCategoryComboBox.SelectedIndex > 0)
            {
                string CategoryName = ProductCategoryComboBox.SelectedItem.ToString();

                FoodRepository _DataAccess = new FoodRepository();

                int CategoryID = _DataAccess.ReturnCategoryID(CategoryName);

                foreach (Food ProductDetail in _DataAccess.RetreiveProductsFromCategory(CategoryID))
                {
                    ProductsGridView.Rows.Add(ProductDetail.FId, ProductDetail.FName, ProductDetail.FPrice, CategoryName, ProductDetail.FDescription, ProductDetail.FPicture);
                }
            }
        }