详细内容看参考
1.代码如下：

using System;
using SAP.Middleware.Connector;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            RfcConfigParameters config = new RfcConfigParameters();
            config.Add(RfcConfigParameters.Name, "SAP");
            config.Add(RfcConfigParameters.AppServerHost, "192.168.1.15");
            config.Add(RfcConfigParameters.SystemNumber, "00");
            config.Add(RfcConfigParameters.User, "baba");
            config.Add(RfcConfigParameters.Password, "t12t");
            config.Add(RfcConfigParameters.Client, "905");
            config.Add(RfcConfigParameters.Language, "ZH");


            RfcDestination destination = RfcDestinationManager.GetDestination(config);
            RfcRepository respository = destination.Repository;
            IRfcFunction function = respository.CreateFunction("Z_GET_SCAR");
            function.SetValue("I_CARRID", "AC");
            try
            {
                function.Invoke(destination);
                string name = function.GetString("E_CARRNAME");
                Console.WriteLine(name);
            }
            catch(RfcAbapException ex)
            {
                if (ex.Key == "CARR_NOT_FOUND")
                    Console.WriteLine("Airline company not found with given id.");
            }
            Console.ReadLine();
        }
    }
}