LLBL version V3.1 VS 2010

I create a silverlight application which enable WCF RIA service the serivce code like

    [EnableClientAccess()]
    public class RIAService1 : LLBLGenProDomainService2
    {
        public IEnumerable<NotepadEntity>  GetEntityList()
        {
            DataAccessAdapter adapter = new DataAccessAdapter();
            EntityCollection<NotepadEntity> collection = new EntityCollection<NotepadEntity>();
            adapter.FetchEntityCollection(collection, null);
            return collection;
        }

        protected override IDataAccessAdapter CreateDataAccessAdapter()
        {
            return new DataAccessAdapter();
        }
    }

In silverlight client,the generated code in file XXX.g.cs like

public sealed partial class RIAService1 : DomainContext
{
   // some other code
        /// <summary>
        /// Gets the set of <see cref="NotepadEntity"/> entity instances that have been loaded into this <see cref="RIAService1"/> instance.
        /// </summary>
        public EntitySet<NotepadEntity> NotepadEntities
        {
            get
            {
                return base.EntityContainer.GetEntitySet<NotepadEntity>();
            }
        }


        public EntityQuery<NotepadEntity> GetEntityListQuery()
        {
            this.ValidateMethod("GetEntityListQuery", null);
            return base.CreateQuery<NotepadEntity>("GetEntityList", null, false, true);
        }
}

when I call the GetEntityListQuery() method,it's Query property is null, and no breakpoint be hitted. It seems that no service code be executed.

            RIAService1 service = new RIAService1();
            var result = service.GetEntityListQuery().Query;
            dataGrid1.ItemsSource = result;

How to call the service method,do me miss something?

        RIAService1 service = new RIAService1();
        var result = service.GetEntityListQuery().Query;
        dataGrid1.ItemsSource = result;

Instead of the above, please try the following:

            RIAService1 service = new RIAService1();
            LoadOperation<NotepadEntity> loadOp = service .Load(service .GetEntityListQuery());
            dataGrid1.ItemsSource = loadOp.Entities;

ref: http://msdn.microsoft.com/en-us/library/ee707351(v=VS.91).aspx