Question

I am building a silverlight application using MVVM pattern but I don’t understand what I am missing here…

1. ViewsProject (Silverlight Application) contains user controls and page. References ViewModelsProject.

2. ViewModelsProject (Silverlight class library) contains backend code of views. Also the business logic will reside in here. It will reference Models project.

3. ModelsProject (Windows class library) contains: Ado.net entity model of a local database and a WCF RIA DomainService built on the entity model. It’s purpose is to get data from the local database and the entities are exposed via domain service.

4. Web project: Contains xap of ViewsProject.

Have I done everything correct so far? If yes then please help me understand:

How do I call the methods of the
domain service in the ViewsModel
project? If I reference the
ModelsProject, I get the error that
only silverlight projects can be
added.
If I change ModelsProject to a
silverlight class library project
then I can’t add the entity model of
my database.

Answer 1

I worked out the answer.

Change ViewModelsProject (Silverlight class library) to Silverlight Application type.
Check Enable Ria services during creation of the project.

In the view model class, add using ModelsProject.
Compile the ViewModelsProject.

All of the methods of the WCF Ria service will then appear in the code.