Can required WCF4 DataMemeber's be organized into required groups?

Is there a way to have required DataMember's within a DataContract to be organized into groups s开发者_Python百科o that you really only require group one or group two but no both to be provided?

I am looking to see if there is functionality similar to Workflow Activity validation where you can flag InArgument's with a RequiredArgument and then use OverloadGroup attribute to put these into groups so that only the arguments in one of the specified groups are required.

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It is not possible out of the box with DataContractSerializer but you can switch to XmlSerializer and use xsd:choice (XmlChoiceIdentifierAttribute) but be aware that this will affect your data class beacuse this construct has its own requirements.

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Nope, there is no way to do this. Only way to group is to have two different classes and extract away members/properties into those classes, but still...you won't be able to dictate an "either-on" setting.