base.base.method() ??:

?? ?? ???????? ?? ? ?? ??? ?? ??? ??? ?? ??????. ??. ?? ????? ???? ???? ? base? ???? ?? ??? ??? ??? ? ????. ??? ?? ??????? ?? ???? ?? ???? ?????? ??? ??? ? ????.

?? ?? ??? ?????.

class Base
{
    public virtual void Say()
    {
        Console.WriteLine("Called from Base.");
    }
}

class Derived : Base
{
    public override void Say()
    {
        Console.WriteLine("Called from Derived.");
        base.Say();
    }
}

class SpecialDerived : Derived
{
    public override void Say()
    {
        Console.WriteLine("Called from Special Derived.");
        base.Say();
    }
}

sd? ??? ?. SpecialDerived ????? ?? Say()? ???? ??? ?? ??? ?? ??? ?????.

Called from Special Derived.
Called from Derived.
Called from Base.

??? ???? get:

Called from Special Derived.
Called from Derived. /* this is not expected */
Called from Base.

Derived.Say()? ?? ??? ?? ??? base? ?? ?? ??? ???? ?? ???? ???? ?????. ??? SpecialDerived.Say()? Base.Say()? ???? ?? Derived.Say()? ?????.

? ??? ????? base.base.method()? ?? ??? ? ????. ?? ?? ?? ??? ??? ? ????.

class Derived : Base
{
    public override void Say()
    {
        CustomSay();

        base.Say();
    }

    protected virtual void CustomSay()
    {
        Console.WriteLine("Called from Derived.");
    }
}

class SpecialDerived : Derived
{
    protected override void CustomSay()
    {
        Console.WriteLine("Called from Special Derived.");
    }
}

?? ??? CustomSay()? ???? ?? ??? ?? ???? ???? ??? ??? ? ????. ? ?? SpecialDerived? ?? ??? ???? ?? CustomSay()? ????? Derived.CustomSay()? ????? ?????.

?? ??? ?? ????? ???? ?? ??? ??? ??? ????? ?? ??? ? ????.

class SpecialDerived : Derived
{
    public override void Say()
    {
        Console.WriteLine("Called from Special Derived.");
        var ptr = typeof(Base).GetMethod("Say").MethodHandle.GetFunctionPointer();            
        var baseSay = (Action)Activator.CreateInstance(typeof(Action), this, ptr);
        baseSay();            
    }
}

? ??? C#?? ?? ???? ?? ??? ???? ???? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!