Call a function with a different output

Andrea Mariotti

11y1k

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!

2 Replies

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Andrea Mariotti11y ago
I tried but compiling the project returns this error:
already defines a member called 'GetSomethingJ' with the same parameter types
0
Praveen Dhatrika11y ago
Your OperationContract should have an attribute called Name, define two differnt names that make each contract isolate to each other.

[OperationContract(Name="First")]
[WebInvoke(Method = "GET",
ResponseFormat = WebMessageFormat.Xml,
UriTemplate = "/GetSomethingJ?id={varID}")]
Controllo GetSomethingJ(Int32 varID);

[OperationContract(Name="Second")]
[WebInvoke(Method = "GET",
ResponseFormat = WebMessageFormat.Xml,
UriTemplate = "/GetSomethingJ?id={varID}")]
Controllo GetSomethingJ(Int32 varID);

Something like this I mean
0