难题：类B继承接口A，接口A中含有一个接口C的成员，类B中怎么实现C中的成员

Question

private class Persistent : IPersistent
        {
        }        public IPersistent[] PersistentObj
        {
            get 
            { 
                Persistent persistent = new Persistent();
                persistent.xx = xxx;
                return persistent;
            }
        }

Answer 1

刚没看是个数组:
        private class Persistent : IPersistent
        {
            private string m_FileName = "";
            public string FileName
            {
                get
                {
                    return m_FileName;
                }
                set 
                {
                    m_FileName =value;
                }
            }
        }        public IPersistent[] PersistentObj
        {
            get 
            {
                int length = xxxx;
                Persistent[] persistents = new Persistent[length ];
                for(int i=0;i<length ;i++)
                {
                    persistents[i] = new Persistent();
                    persistents[i].FileName = "xx";
                }
                return persistents ;
            }
        }