RIA Service - without database?

Helo!

开发者_Go百科I need to write a RIA service to call Java webservices from Silverlight 3.0 app. I'm testing how stuff works and in my Web app I have a MyData class which has 2 properties (int ID, string Text):

namespace SilverlightApplication1.Web
{
    public class MyData
    {
        [Key]
        public int ID { get; set; }

        public string Text { get; set; }
    }
}

Then I wrote simple DomainService:

[EnableClientAccess()]
public class MyService : DomainService
    {
        public IQueryable<MyData> GetMyData(string Url)
        {
                    // here I will call my WebService

            List<MyData> result = new List<MyData>();
            result.Add(new MyData { ID = 1, Text = Url });
            return result.AsQueryable();
        }
    }
}

How can I get data into my SL app? Now I have this:

namespace SilverlightApplication1 { public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); MyContext context = new MyContext(); } } }

I called and load but nothink worsk (exceptions, or nulls)...

I had Invoke annotation but MyData is not TEntity and I can't use Strings or other simple types as well... :/ I'm reading and reading posts and nothing works like it should..

Any help would be really appreciated.

Thank you!

Your code looks good on the server. You will want to move the context outside of the MainPage constructor and add a callback to your load operation. Also make sure to add the System.ServiceModel.DomainServices.Client using to the page (for LoadOperation).

using System.Linq;
using System.ServiceModel.DomainServices.Client;
using System.Windows.Controls;
using SilverlightApplication1.Web;


namespace SilverlightApplication1
{
    public partial class MainPage : UserControl
    {
        MyContext context = new MyContext();
        public MainPage()
        {
            InitializeComponent();

            context.Load(context.GetMyDataQuery("url"), loadCallback, null);
        }

        void loadCallback(LoadOperation op)
        {
            MyData d = context.MyDatas.First();
        }
    }
}