C#泛型中带有类型参数的类型参数

Question

I want to use a type parameter with type argument in generics in c# like this:

public class ClassB {}
public class ClassA<T>: IList<T<ClassB>> {}

Is it possible doing something like this?

Answer 1

After trying many things, it seems you can't yet, even using where clauses: the compiler refuses all T<ClassB> and IList<T1<T2>> .

https://docs.microsoft.com/en-us/dotnet/csharp/misc/cs0307

Example:

public class ClassA<T1, T2> : IList<T1<T2>> // implementation request refused
  where T2 : ClassB
{
}

public class ClassA<T, T1, T2> : IList<T>
  where T : T1<T2> // constraint refused
  where T2 : ClassB
{
}

Cannot use parameter of type T1 with arguments of type

It might be interesting to be able to do such a thing.