转 the best for wcf client

public static class MyServiceClientHelp
    {
        public static TResult Using<T, TResult>(this T client, Func<T, TResult> work) where T : ICommunicationObject
        {
            try
            {
                var result = work(client);

                client.Close();

                return result;
            }
            catch (Exception e)
            {
                client.Abort();

                throw;
            }
        }
    }

var result = MyServiceClientHelp.Using
                (new IntroductionServiceClient(),
                    x => x.IntroduceAsync(new IntroductionRequest { Greeting = "hehhehe", Name = "ly" }).Result
                );
            Console.WriteLine(string.Format("{0} {1}, my name is {2}", result.Greeting, result.ClientName, result.ServiceName));