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Is there a way to return different types from a WCF REST method?

I am trying to write a web service for a specification, and this requires a different response body, depending on whether this method completed successfully or not. I tried to create two different DataContract classes, but how can I return them and are they serialized correctly?

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The answer is yes , but it is difficult and you lose strong typing on your interface. If you return the stream , then the data can be xml, text, or even binary. For the DataContract classes, you then serialize the data using the DataContractSerializer .

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