public interface IServiceInvoker

    {

        void InvokeService<T>(Action<T> invokeHandler) where T : class;

        TReslt InvokeService<T, TReslt>(Func<T, TReslt> invokeHandler) where T : class;

    }

public class WCFServiceInvoker:IServiceInvoker

    {

        private static readonly ChannelFactoryManager FactoryManager = new ChannelFactoryManager();

        private static readonly ClientSection ClientSection =

            ConfigurationManager.GetSection("system.serviceModel/client") as ClientSection;

        public void InvokeService<T>(Action<T> invokeHandler) where T : class

        {

            KeyValuePair<string, string> endpointNameAddressPair = GetEndpointNameAddressPair(typeof(T));

            var arg = FactoryManager.CreateChannel<T>(endpointNameAddressPair.Key, endpointNameAddressPair.Value);

            var obj2 = (ICommunicationObject)arg;

            try

            {

                invokeHandler(arg);

            }

            finally

            {

                try

                {

                    if (obj2.State != CommunicationState.Faulted)

                    {

                        obj2.Close();

                    }

                }

                catch

                {

                    obj2.Abort();

                }

            }

        }

        public TReslt InvokeService<T, TReslt>(Func<T, TReslt> invokeHandler) where T : class

        {

            KeyValuePair<string, string> endpointNameAddressPair = GetEndpointNameAddressPair(typeof(T));

            var arg = FactoryManager.CreateChannel<T>(endpointNameAddressPair.Key, endpointNameAddressPair.Value);

            var obj2 = (ICommunicationObject)arg;

            try

            {

                return invokeHandler(arg);

            }

            finally

            {

                try

                {