wcf服务中的数据和成员合同 [英] Data and Member contract in wcf service

问题描述

如果我没有提到数据合同和成员合同，我的wcf服务也运行正常。那么在wcf服务中使用这两个合同有什么好处。

解决方案

由于使用.NET 3.5 SP1，很多程序员都被 [DataContract] 和 [DataMember] 属性所淹没，微软让数据契约序列化程序处理所有类 - 即使没有任何属性 - 就像旧的XML序列化程序一样。



从.NET 3.5 SP1开始，你不要不再需要添加数据协定或数据成员属性 - 如果不这样做，那么数据协定序列化程序将序列化类上的所有公共属性，就像XML序列化程序一样。



但是：通过不添加这些属性，您将失去许多有用的功能：



没有 [DataContract] ，你不能为你的数据定义一个XML命名空间，而没有 [DataMem] ber] ，您无法序列化非公共属性或字段

没有 [DataMember] ，您无法定义订单序列化（Order =）和DCS将按字母顺序序列化所有属性

没有 [DataMember] ，您无法为您的属性定义不同的名称（名称=）

没有 [DataMember] ，你无法定义像IsRequired =或其他有用属性的东西

没有 [DataMember] ，你不能遗漏某些公共财产 - 所有公共财产都将由DCS序列化。



因此，对于quick'n'dirty解决方案，请忽略 [DataContract] 和 [DataMember] 属性工作 - 但是将它们放在数据类上仍然是一个好主意 - 只是为了更明确地了解你正在做什么，并让自己访问所有那些没有它们就没有的附加功能。

[from here] [ ^ ]



您可以在此处找到有关合同的更多详细信息：

http://www.dotnet-tricks.com/Tutorial/wcf/3ISW280913-Understanding-different-types-of-WCF-Contracts.html [ ^ ]

了解WCF中的合同 [ ^ ]



- KR

If i not mentioned Data contract and Member contract also my wcf service is working good.Then what is benefits to use these 2 contracts in wcf service.

解决方案

Since a lot of programmers were overwhelmed with the [DataContract] and [DataMember] attributes, with .NET 3.5 SP1, Microsoft made the data contract serializer handle all classes - even without any of those attributes - much like the old XML serializer.

So as of .NET 3.5 SP1, you don't have to add data contract or data member attributes anymore - if you don't then the data contract serializer will serialize all public properties on your class, just like the XML serializer would.

HOWEVER: by not adding those attributes, you lose a lot of useful capabilities:

without [DataContract], you cannot define an XML namespace for your data to live in
without [DataMember], you cannot serialize non-public properties or fields
without [DataMember], you cannot define an order of serialization (Order=) and the DCS will serialize all properties alphabetically
without [DataMember], you cannot define a different name for your property (Name=)
without [DataMember], you cannot define things like IsRequired= or other useful attributes
without [DataMember], you cannot leave out certain public properties - all public properties will be serialized by the DCS.

So for a "quick'n'dirty" solution, leaving away the [DataContract] and [DataMember] attributes will work - but it's still a good idea to have them on your data classes - just to be more explicit about what you're doing, and to give yourself access to all those additional features that you don't get without them.
[from here][^]

You can find more details about contracts here:
http://www.dotnet-tricks.com/Tutorial/wcf/3ISW280913-Understanding-different-types-of-WCF-Contracts.html[^]
Understanding Contracts in WCF[^]

-KR

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