RfcDestination SapRfcDestination = RfcDestinationManager.GetDestination("WDA");
                RfcRepository SapRfcRepository = SapRfcDestination.Repository;
                IRfcFunction BapiSalesOrder = SapRfcRepository.CreateFunction("BAPI_SALESORDER_CREATEFROMDAT2");
                
                IRfcTable ORDER_PARTNERS = BapiSalesOrder.GetTable("ORDER_PARTNERS");
                ORDER_PARTNERS.Append();
                ORDER_PARTNERS.SetValue("PARTN_ROLE", "WE");
                ORDER_PARTNERS.SetValue("PARTN_NUMB", "0060125914");
                ORDER_PARTNERS.Append();
                ORDER_PARTNERS.SetValue("PARTN_ROLE", "AG");
                ORDER_PARTNERS.SetValue("PARTN_NUMB", "0060125914");
                
                IRfcStructure order_header_inx = BapiSalesOrder.GetStructure("ORDER_HEADER_INX");
                order_header_inx.SetValue("UPDATEFLAG", "I");
                order_header_inx.SetValue("DOC_TYPE", "X");
                order_header_inx.SetValue("SALES_ORG", "X");
                order_header_inx.SetValue("DISTR_CHAN", "X");
                order_header_inx.SetValue("DIVISION", "X");
                
                IRfcStructure order_header_in = BapiSalesOrder.GetStructure("ORDER_HEADER_IN");
                order_header_in.SetValue("DOC_TYPE", "TA");
                order_header_in.SetValue("SALES_ORG", "12"); 
                order_header_in.SetValue("DISTR_CHAN", "00"); 
                order_header_in.SetValue("DIVISION", "00"); 
                
                IRfcTable ORDER_ITEMS_INX = BapiSalesOrder.GetTable("ORDER_ITEMS_INX");
                IRfcTable ORDER_ITEMS_IN = BapiSalesOrder.GetTable("ORDER_ITEMS_IN");

                ORDER_ITEMS_INX.Append();
                ORDER_ITEMS_IN.Append();
                ORDER_ITEMS_INX.SetValue("UPDATEFLAG", "I");
                ORDER_ITEMS_INX.SetValue("ITM_NUMBER", "000010");
                ORDER_ITEMS_IN.SetValue("ITM_NUMBER", "000010");
                ORDER_ITEMS_INX.SetValue("MATERIAL", "X");
                ORDER_ITEMS_IN.SetValue("MATERIAL", "000000000041000423");
                ORDER_ITEMS_INX.SetValue("TARGET_QTY", "X");
                ORDER_ITEMS_IN.SetValue("TARGET_QTY", "2");
                ORDER_ITEMS_INX.SetValue("PLANT", "X");
                ORDER_ITEMS_IN.SetValue("PLANT", "1201");

                IRfcFunction CommitFunction = SapRfcRepository.CreateFunction("BAPI_TRANSACTION_COMMIT");
                RfcSessionManager.BeginContext(SapRfcDestination);
                BapiSalesOrder.Invoke(SapRfcDestination);
                CommitFunction.Invoke(SapRfcDestination);
                RfcSessionManager.EndContext(SapRfcDestination);

                IRfcTable res = BapiSalesOrder.GetTable("RETURN");
                for (int i = 0; i < res.Count; i++)
                {
                    listBox1.Items.Add(res[i].GetString("MESSAGE"));
                }

public string SAPCreateOrder(string AccountSAPCode, string OfferingSAPCode, int Quantity, float Price)
        {
            IDestinationConfiguration dest = new SAPConnectionManager();
            RfcDestinationManager.RegisterDestinationConfiguration(dest);
            RfcDestination SapRfcDestination = RfcDestinationManager.GetDestination("WDA");
            RfcRepository SapRfcRepository = SapRfcDestination.Repository;

            //RfcSessionManager.BeginContext(SapRfcDestination);

            IRfcFunction BapiSalesOrder = SapRfcRepository.CreateFunction("BAPI_SALESORDER_CREATEFROMDAT2");
            IRfcFunction CommitFunction = SapRfcRepository.CreateFunction("BAPI_TRANSACTION_COMMIT");

            IRfcTable ORDER_PARTNERS = BapiSalesOrder.GetTable("ORDER_PARTNERS");
            ORDER_PARTNERS.Append();
            /* Роль - получатель */
            ORDER_PARTNERS.SetValue("PARTN_ROLE", "WE");
            /* Получатель */
            //ORDER_PARTNERS.SetValue("PARTN_NUMB", "0060125914");
            ORDER_PARTNERS.SetValue("PARTN_NUMB", AccountSAPCode);
            ORDER_PARTNERS.Append();
            /* Роль - заказчик */
            ORDER_PARTNERS.SetValue("PARTN_ROLE", "AG");
            /* Заказчик */
            //ORDER_PARTNERS.SetValue("PARTN_NUMB", "0060125914");
            ORDER_PARTNERS.SetValue("PARTN_NUMB", AccountSAPCode);

            IRfcStructure order_header_inx = BapiSalesOrder.GetStructure("ORDER_HEADER_INX");
            order_header_inx.SetValue("UPDATEFLAG", "I");
            order_header_inx.SetValue("DOC_TYPE", "X");
            order_header_inx.SetValue("SALES_ORG", "X");
            order_header_inx.SetValue("DISTR_CHAN", "X");
            order_header_inx.SetValue("DIVISION", "X");

            IRfcStructure order_header_in = BapiSalesOrder.GetStructure("ORDER_HEADER_IN");
            /* Тип документа - Стандартный заказ */
            order_header_in.SetValue("DOC_TYPE", "TA");
            /* Компания-продавец (Сбытовая организация) */
            order_header_in.SetValue("SALES_ORG", "12");
            /* Канал сбыта */
            order_header_in.SetValue("DISTR_CHAN", "00");
            /* Сектор */
            order_header_in.SetValue("DIVISION", "00");

            IRfcTable ORDER_ITEMS_INX = BapiSalesOrder.GetTable("ORDER_ITEMS_INX");
            IRfcTable ORDER_ITEMS_IN = BapiSalesOrder.GetTable("ORDER_ITEMS_IN");

            ORDER_ITEMS_INX.Append();
            ORDER_ITEMS_IN.Append();
            /* Признак операции (I-вставка, U - обновление, D - удаление) */
            ORDER_ITEMS_INX.SetValue("UPDATEFLAG", "I");
            /* Порядковый номер */
            ORDER_ITEMS_INX.SetValue("ITM_NUMBER", "000001");
            ORDER_ITEMS_IN.SetValue("ITM_NUMBER", "000001");
            /* Продукт */
            ORDER_ITEMS_INX.SetValue("MATERIAL", "X");
            //ORDER_ITEMS_IN.SetValue("MATERIAL", "000000000041000423");
            ORDER_ITEMS_IN.SetValue("MATERIAL", OfferingSAPCode);
            /* Количество */
            ORDER_ITEMS_INX.SetValue("TARGET_QTY", "X");
            //ORDER_ITEMS_IN.SetValue("TARGET_QTY", "2");
            ORDER_ITEMS_IN.SetValue("TARGET_QTY", Quantity.ToString());
            /* Завод */
            ORDER_ITEMS_INX.SetValue("PLANT", "X");
            ORDER_ITEMS_IN.SetValue("PLANT", "1201");

            IRfcTable ORDER_SCHEDULES_INX = BapiSalesOrder.GetTable("ORDER_SCHEDULES_INX");
            IRfcTable ORDER_SCHEDULES_IN = BapiSalesOrder.GetTable("ORDER_SCHEDULES_IN");
            ORDER_SCHEDULES_INX.Append();
            ORDER_SCHEDULES_IN.Append();
            /* Признак операции (I-вставка, U - обновление, D - удаление) */
            ORDER_SCHEDULES_INX.SetValue("UPDATEFLAG", "I");
            /* Порядковый номер */
            ORDER_SCHEDULES_INX.SetValue("ITM_NUMBER", "000001");
            ORDER_SCHEDULES_IN.SetValue("ITM_NUMBER", "000001");
            /* Количество */
            ORDER_SCHEDULES_INX.SetValue("REQ_QTY", "X");
            //ORDER_SCHEDULES_IN.SetValue("REQ_QTY", "2");
            ORDER_SCHEDULES_IN.SetValue("REQ_QTY", Quantity.ToString());

            IRfcTable ORDER_CONDITIONS_INX = BapiSalesOrder.GetTable("ORDER_CONDITIONS_INX");
            IRfcTable ORDER_CONDITIONS_IN = BapiSalesOrder.GetTable("ORDER_CONDITIONS_IN");
            ORDER_CONDITIONS_INX.Append();
            ORDER_CONDITIONS_IN.Append();
            /* Признак операции (I-вставка, U - обновление, D - удаление) */
            ORDER_CONDITIONS_INX.SetValue("UPDATEFLAG", "I");
            /* Порядковый номер */
            ORDER_CONDITIONS_INX.SetValue("ITM_NUMBER", "000001");
            ORDER_CONDITIONS_IN.SetValue("ITM_NUMBER", "000001");
            /* Порядковый номер условия(прайса) */
            ORDER_CONDITIONS_INX.SetValue("COND_COUNT", "01");
            ORDER_CONDITIONS_IN.SetValue("COND_COUNT", "01");
            /* Код расчета цены */
            ORDER_CONDITIONS_INX.SetValue("COND_TYPE", "Z000");
            ORDER_CONDITIONS_IN.SetValue("COND_TYPE", "Z000");
            /* Цена */
            ORDER_CONDITIONS_INX.SetValue("COND_VALUE", "X");
            ORDER_CONDITIONS_IN.SetValue("COND_VALUE", Price.ToString());
            /* Валюта */
            ORDER_CONDITIONS_INX.SetValue("CURRENCY", "X");
            ORDER_CONDITIONS_IN.SetValue("CURRENCY", "EUR");
            /* По идее, код единицы измерения (шт) */
            ORDER_CONDITIONS_INX.SetValue("COND_P_UNT", "X");
            ORDER_CONDITIONS_IN.SetValue("COND_P_UNT", "1");

            BapiSalesOrder.Invoke(SapRfcDestination);
            CommitFunction.Invoke(SapRfcDestination);
            //RfcSessionManager.EndContext(SapRfcDestination);

            string ResultMessage = "";
            IRfcTable res = BapiSalesOrder.GetTable("RETURN");
            for (int i = 0; i < res.Count; i++)
            {
                ResultMessage = ResultMessage + res[i].GetString("MESSAGE");
            }
            RfcDestinationManager.UnregisterDestinationConfiguration(dest);
            return ResultMessage;
        }

public class SAPConnectionManager : IDestinationConfiguration
{
        public RfcConfigParameters GetParameters(String destinationName)
        {
            if ("WDA".Equals(destinationName))
            {
                RfcConfigParameters parms = new RfcConfigParameters();
                parms.Add(RfcConfigParameters.AppServerHost, "192.168.1.1");
                parms.Add(RfcConfigParameters.SystemNumber, "00");
                parms.Add(RfcConfigParameters.SystemID, "WDA");
                parms.Add(RfcConfigParameters.User, "user_name");
                parms.Add(RfcConfigParameters.Password, "password");
                parms.Add(RfcConfigParameters.Client, "300");
                parms.Add(RfcConfigParameters.Language, "RU");
                parms.Add(RfcConfigParameters.PoolSize, "10");
                parms.Add(RfcConfigParameters.MaxPoolSize, "10");
                parms.Add(RfcConfigParameters.IdleTimeout, "600");
                return parms;
            }
            else return null;
        }
        public bool ChangeEventsSupported()
        {
            return false;
        }
        public event RfcDestinationManager.ConfigurationChangeHandler ConfigurationChanged;
}