Question

Am i trying to achieve the impossible or is it simply unnecessary? The code in GetList is the same for all specializations of the class A, apart from the bit to create a new instance of the specialization. There is no default constructor, always the same list of parameters.

At the moment I am using instead public static List<A> GetList(int i, Func<A> createMeAnInstance)

Which feels unclean.

abstract class A
{
  protected A (int i)
  {

  }

  public static List<T> GetList<T>(int i) where T : A
  {
    var list = new List<T>();
    for(int x = 1; x< 100; x++)
    {
     var o = new T(i);
     list.Add(o);
    }
  }
 }   

 public class B : A
 {
    public B (int i) : base(i) {}
 }

 ...

 var list = A.GetList<B>(1);

Answer 1

You can’t call parameterized constructors on generic types. Your Func<> version is the best approach here.