Problem with interface implementation in partial classes

Question

I have a question regarding a problem with L2S, Autogenerated DataContext and the use of Partial Classes. I have abstracted my datacontext and for every table I use, I\'m im

Answer 1

You can solve this by implementing the interface explicitly:

namespace PartialProject.objects
{
  public interface Interface
  {
    Interface Instance { get; }
  }

  //To make sure the autogenerated code inherits Interface
  public partial class Class : Interface 
  {
    Interface Interface.Instance 
    {
      get
      {
        return Instance;
      }
    }
  }

  //This is autogenerated
  public partial class Class
  {
     public Class Instance
     {
        get
        {
          return this.Instance;
        }
     }
  }
}

Answer 2

Return types aren't covariant in C#. As you can't change the auto-generated code the only solution I see is to change the interface:

public interface Interface<T>
{
    T Instance { get; }
}

And change your partial class accordingly:

public partial class Class : Interface<Class> { }