小编use*_*858的帖子

我有几个WCF数据合同如下:

        [DataContract] 
        public class Hatchback: Car
        {
            [DataMember]   
            public int Wheels;
        } 

        [KnownType(Hatchback)] 
        [DataContract] 
        public abstract class Car
        {

        } 

我也可以这样写:

        [DataContract] 
        public class Hatchback: Car
        {
            [DataMember]   
            public int Wheels;
        } 

        [XmlInclude(Hatchback)] 
        [DataContract] 
        public abstract class Car
        {

        } 

这两种不同类型的实现之间的区别是什么？XmlInclude比KnownType有什么优点/缺点吗？