I'm apart of the core team that maintains ServiceStack - a mature Open Source alternative to WCF: modern, code-first, model-driven, WCF replacement web services framework encouraging code and remote best-practices for creating terse, DRY, high-perfomance, scalable REST web services.
It has automatic support JSON, JSONP, CORS headers as well as form-urlencoded/multipart-formdata. The Online Demos are a good start to look at since they all use Ajax.
In addition, there's no XML config, or code-gen and your 'write-once' C# web service provides all JSON, XML, SOAP, JSV, CSV, HTML endpoints enabled out-of-the-box, automatically with hooks to plug in your own Content Types if needed.
It also includes generic sync/async service clients providing a fast, typed, client/server communication gateway end-to-end.
This is the complete example of all the code needed to create a simple web service, that is automatically without any config, registered and made available on all the web data formats on pre-defined and custom REST-ful routes:
public class Hello : IReturn<HelloResponse>
{
public string Name { get; set; }
}
public class HelloResponse
{
public string Result { get; set; }
}
public class HelloService : Service
{
public object Get(Hello request)
{
return new HelloResponse { Result = "Hello, " + request.Name };
}
}
Above service can be called (without any build-steps/code-gen) in C# with the line below:
HelloResponse response = client.Get(new Hello { Name = "World!" });
response.Result.Print(); // => Hello, World
And in jQuery with:
$.getJSON('hello/World!', function(r){
alert(r.Result);
});
