此链接将为您提供" WCF消息合同"的概念.
使用消息合同

该链接将为您提供有关" WCF数据合同"的详细信息.
使用数据合同

老实说，我从有趣的讨论话题下面找到了有用的链接，这些话题与您正在寻找的主题相同.
MessageContract与DataContract

This link will give you idea of "WCF Message Contracts".
Using Message Contracts

This link will provide you details around "WCF Data Contracts".
Using Data Contracts

To be honest, I got above useful links from below interesting discussion thread on the same topic which you are looking for.
MessageContract vs DataContract