在Silverlight和WPF客户端之间共享数据模型

Question

I am using EntityFramework Code First 5 and I have my data model.

Example:

[Table("Contract"]]
public class Contract
{
    ...

    [ForeignKey("SomeKey")]
    //[Include]
    public virtual BusinessPartner BP
    {
    ...
    }
}

The data model is currently used by WPF client and it works great. Now I am writing a Silverlight client and using the same model. To acces the database I am using RIA Services. It worked great in silverlight until I had to add some RIA annotations like [Include] (it is commented in the above example).

The problem is that we are using .NET 4 Client Profile in our data model and we cannot change it. But RIA annotations are in System.ServiceModel.DomainServices.Server namespace which requires .NET 4 or .NET 4.5.

So if I add RIA [Include] annotation the model does not compile anymore.

Is there any way to use RIA annotation attributes witihin .NET 4 Client Profile so I could use the same data model in WPF and Silverlight client?

I have read something about defining those RIA attributes in XML file but I cannot find an example..

Thank you

Answer 1

I have found a solution to my problem. I have used FluentMetadata, Fluent API for WCF RIA Services that enabled me to define annotations in a different assembly. It was just what I needed. More information about FluentMetadata can be found on the following link

Answer 2

If it worked for WPF and works fine in Silverlight the only thing you need is to create your own dummy attribute for you WPF application which will mimic IncludeAttribute from RIA to get it compiled. To achieve that you need to place the attribute into same namespace where it is in RIA.

namespace System.ServiceModel.DomainServices.Server 
{
    // Just put this into your WPF app :)
    [AttributeUsageAttribute(AttributeTargets.Property|AttributeTargets.Field, AllowMultiple = true, Inherited = true)]
    public class IncludeAttribute : Attribute {}
}