Silverlight Async Rest Wcf

Here is a simple example application that shows off:

• “Aync” and “await” within Silverlight 5 in Visual Studio 11
• Calling a simple RESTful WCF interface hosted with no config or svc file

MainPage.xaml.cs (code behind)

private async void LoadDataButton_Click(object sender, RoutedEventArgs e)
{
    var request = new WebClient();
    var uri = new Uri("http://localhost:5349/services/cars");
    var jsonString = await request.DownloadStringTaskAsync(uri);

    using (var stream = new MemoryStream(Encoding.Unicode.GetBytes(jsonString.ToCharArray())))
    {
        var serializer = new DataContractJsonSerializer(typeof (Car[]));
        var cars = (Car[]) serializer.ReadObject(stream);
        CarsListBox.ItemsSource = cars;
    }
}

Service Interface

[ServiceContract]
interface IService<T>
{
    [OperationContract]
    IList<T> GetAll();
    
    [OperationContract]
    T Get(string id);
  
    [OperationContract]
    void Insert(T entity);
  
    [OperationContract]
    void Update(string id, T entity);
 
    [OperationContract]
    void Delete(string id);
}

Service Implementation

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class CarService : IService<Car>
{
    private readonly IRepository<Car> _repo;

    public CarService()
    {
        _repo = new FakeCarRepository();
    }

    public CarService(IRepository<Car> repo)
    {
        _repo = repo;
    }

    [WebGet(UriTemplate = "Cars", ResponseFormat = WebMessageFormat.Json)]
    public IList<Car> GetAll()
    {
        var cars = _repo.GetAll();
        return cars;
    }

    [WebGet(UriTemplate = "Car/{id}", ResponseFormat = WebMessageFormat.Json)]
    public Car Get(string id)
    {
        var car = _repo.GetById(id);
        return car;
    }

    [WebInvoke(UriTemplate = "Car", Method = "POST")]
    public void Insert(Car car)
    {
        _repo.Insert(car);
    }

    [WebInvoke(UriTemplate = "Car/{id}", Method = "PUT")]
    public void Update(string id, Car car)
    {
        _repo.Update(car);
    }
 
    [WebInvoke(UriTemplate = "Car/{id}", Method = "DELETE")]
    public void Delete(string id)
    {
        _repo.Delete(id);
    }
}

DTO

[DataContract]
public class Car
{
    [DataMember]
    public int Id { get; set; }
    [DataMember]
    public string Make { get; set; }
    [DataMember]
    public string Model { get; set; }
    [DataMember]
    public int Year { get; set; }
}

How come no config or svc file?

Global.asax

public class Global : HttpApplication
{
    protected void Application_Start(object sender, EventArgs e)
    {
        RouteTable.Routes.Add(new ServiceRoute("services", new WebServiceHostFactory(), typeof(CarService)));
    }
}

Web.config

<?xml version="1.0"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.0" />
  </system.web>
  <system.serviceModel>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true"/>
    <standardEndpoints>
      <webHttpEndpoint>
        <standardEndpoint name="" helpEnabled="true" automaticFormatSelectionEnabled="true"/>
      </webHttpEndpoint>
    </standardEndpoints>
  </system.serviceModel>
</configuration>

Source

http://stevenhollidge.com/blog-source-code/SilverlightAsyncRestWcf.zip