Resolved: Using generic interface in a generic class 0 By Isaac Tonny on 17/06/2022 Issue Share Facebook Twitter LinkedIn Question: How force to use class that implement generic interface in class? Is something like this possible? public interface IGeneric<T> { T Value {get;} } //public class MyList<IGeneric<T>> {}//not allowed Answer: Something like this: void Main() { MyList<string> myList = new MyList<string>(new Generic()); } public interface IGeneric<T> { T Value { get; } } public class MyList<T> { private IGeneric<T> _generic; public MyList(IGeneric<T> generic) { _generic = generic; } } public class Generic : IGeneric<string> { public string Value => throw new NotImplementedException(); } Or like this: void Main() { MyList<Generic, string> myList = new MyList<Generic, string>(); //Or MyList<IGeneric<string>, string> myList = new MyList<IGeneric<string>, string>(); } public interface IGeneric<T> { T Value { get; } } public class MyList<G, T> where G : IGeneric<T> { } public class Generic : IGeneric<string> { public string Value => throw new NotImplementedException(); } If you have better answer, please add a comment about this, thank you! c# generics interface list