private void btnAddToCart_Click(object sender, RoutedEventArgs e)
{
int id = buyersBL.getBuyerIdBL(BuyerName);
addCart.BuyerId = id;
if (cartBL.AddCartBL(addCart))
{
MessageBox.Show("Product added to cart...");
}
else
{
MessageBox.Show("Failed to add to cart");
}
}