automatic post-construction initialisation

virtual methods should not be called in the constructor of a base class because the constructor of the derived class is not called and so all initialisation logic isn't invoked.

I want to know if there is a way to hook in there to automatically call a method after the object is completely constructed. I do not want to push the responsibility of calling an initialise method onto the user.

Lets say I have the following

public abstract class Foo
{
  protected Foo()
  {
    ...
    AfterConstruction();
  }

  protected virtual void AfterConstruction(){}
}

public class Bar : Foo
{
  protected override void AfterConstruction()
  {
    ...
  }
}

I know this should not be done and I thought maybe one can get around this by using reflection to observe object construction and then hook after the construction is finished to call the function AfterConstruction(). But I cannot find appropriate code to do so.

Thank you for your thoughts