实现接口与显示实现接口的区别

继承接口有两种实现方式：A:显示实现接口，B:（隐式）实现接口
文笔太差，就写这么点吧，我自己也是一知半解，请各位多多补充，感谢
interface IAnimal  { 
          string Add(string name);
          string Delete(string name);    }

 class Dog:IAnimal
    {
        #region IAnimal 成员 
        //隐式实现接口
        public string Add(string name)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        public string Delete(string name)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        #endregion

        #region IAnimal 成员
        //显示实现接口
        string IAnimal.Add(string name)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        string IAnimal.Delete(string name)
        {
            throw new Exception("The method or operation is not implemented.");
        }

        #endregion
    }

B:(隐式)实现接口
string name="aa";
            Dog dy = new Dog();//隐式
            dy.Add(name);

A:显示实现接口           
Dog d = new Dog();//显示实现接口后调用方法
                  //需要进行类型转换
            ((IAnimal)d).Add(name);
参考：
    http://topic.csdn.net/u/20070822/13/20161194-e05b-4a63-8b3b-51718f16dee8.html
     http://www.cnblogs.com/huashanlin/archive/2006/12/13/591129.html
     http://www.cnblogs.com/ericwen/archive/2007/12/28/1018181.html