Question

I have this interface defined:

public interface IOwlAnnotation2<T1, T2, T3>
{
    T1 OwlAnnotation { get; set; }
    T2 OwlClass { get; set; }
    T3 AnnotationValue { get; set; }
}

Now I want to derive a class for it… so I write:

public class OwlAnnotation2 : IOwlAnnotation2<T1, T2, T3>

but I get errors of Cannot resolve symbol on T1,2,3 …What is the correct way of deriving form that interface?

Answer 1

You have to specify type parameters in the implementing class. You can either keep them generic:

public class OwlAnnotation2<T1, T2, T3> : IOwlAnnotation2<T1, T2, T3>

or make them concrete:

public class OwlAnnotation2 : IOwlAnnotation2<string, int, bool>