[OperationContract]
        public void DoWork()
        {
            // 在此处添加操作实现
            return;
        }        [OperationContract]
        public int asdw(int a,int b)
        {
            return a+b;
        }
        [OperationContract]        public string say(string word)
        {
                        return string.Format("you say:\"{0}\".",word);
        }        [OperationContract]
        public string anothersay(string word)
        {
            return string.Format("you say:\"{0}\".", word);
        }anothersay调用不成功,say可以调用成功,函数都是一样的,名称不一样而已