public WholeSaleController(IWholesaleHandler wholeSaleManager) =>
public WholeSaleController(IWholesaleHandler wholeSaleManager)
{
_wholesaleHandler = wholeSaleManager ?? throw new ArgumentNullException(nameof(_wholesaleHandler));
}
public CsvHelper(IBrandHandler brand, IWholesaleHandler WholesaleHandler, ICategoryHandler catagory)
{
_brand = brand ?? throw new ArgumentNullException(nameof(_brand));
_wholesaleHandler = WholesaleHandler ?? throw new ArgumentNullException(nameof(_wholesaleHandler));
_category = catagory ?? throw new ArgumentNullException(nameof(_category));
}