private void ValidateProductSize(ProductStock productStock)
{
if (productStock.ProductSize == null)
{
throw new ArgumentException("You need to specify a ProductSize for the ProductStock.");
}
if (_productSizeRepository.Read(productStock.ProductSize.Id) == null)
{
throw new ArgumentException($"The ProductSize with the ID: {productStock.ProductSize.Id} doesn't exist.");
}
}
public ProductSize Read(int productSizeId)
{
return(_productSizeRepository.Read(productSizeId));
}