public IHttpActionResult Post([FromBody] SellingTransactionModel saleInfo)
        {
            SellingTransactionData data = new SellingTransactionData();

            data.SaveSale(saleInfo);

            return(Ok());
        }
        public List <SellingTransactionTypeModel> GetAllSellingTransactionTypes()
        {
            SellingTransactionData data = new SellingTransactionData();

            return(data.GetAllSellingTransactionTypes());
        }