Call a function with a different output

Question

Goodmorning,

 

I'm trying to realize my 1st project with an WCF service and I've got a question:

I created a web Interface like this:

 

[ServiceContract]

public interface IREST

{

[OperationContract]

[WebInvoke(Method = "GET",

ResponseFormat = WebMessageFormat.Xml,

UriTemplate = "/GetSomething?id={varID}")]

Controllo GetSomething(Int32 varID);

}

And all works: I call the function through the web and I see my XML as a result, perfect!

 

Now the problem: if I want to let the user choose the output (Xml or Json) how I've to do it?

 Atm I changed my code like so:

 

[ServiceContract]

public interface IREST

{

[OperationContract]

[WebInvoke(Method = "GET",

ResponseFormat = WebMessageFormat.Xml,

UriTemplate = "/GetSomethingX?id={varID}")]

Controllo GetSomethingX(Int32 varID);

 

[OperationContract]

[WebInvoke(Method = "GET",

ResponseFormat = WebMessageFormat.Xml,

UriTemplate = "/GetSomethingJ?id={varID}")]

Controllo GetSomethingJ(Int32 varID);

 

}

 

 

because if I try to use the same method in different OperationContract it gives me an error.

I've to duplicate every single function to do this? I hope no!