Best practices for using Wcf service from silverlight?

Question

How would you structure the code to call the wcf service in a silverlight application?

Using only one single wcf service-proxy (aka singleton) deployed and using it throughout your SL application? If so, how did you decide to unsubscribe from the controls from the event ended by ws-call?

or

creating a wcf proxy service for every ws call? Where do you close proxies?

Answer 1

Here is the structure of the application that I found workable:

• The application is divided into modules (Prism, but can be anything) - a module into a vertical function.
• Each module has its own set of client service classes (generated by slsvcutil)

• , , IObservable.

  . GetAllMyDataAsync() GetAllMyDataCompleted, IObservable<MyDataDto[]> GetMyData(). / , , .

  , - :

  new MyServiceClient().GetAllMyData().Subscribe(DoSomethingWithAllMyData)

  , . ( , ):

  var des = (from d in new MyServiceClient().GetMyDataItem()
             from e in new MyServiceClient().GetDataItemEnrichment(d)  
             select new EnrichedData { Data = d, Enrichment = e});  
  des.Subscribe(DoSomethingWithEnrichedData);
  

• (, , , ..), - .

  , MyDataService, MyDataServiceModel. , , . , viewmodels , ( MyServiceClient.GetAllMyData MyDataServiceModel.GetAllMyData.

  viewmodels WCF ( , ). , :

  • / DTO
  • ( )
  • , (, , - ), , , , - ) ..
  • , WCF, ,