Question

I’m trying to extend a class, then use a method from base class, but i can’t see it.

My Code:

class A {
    protected void Foo(){}
}

class B : A {}

class C{
    void Bar(){
         B b = new B();
         b.Foo();
    }
}

How could i use b.Foo in C?

Answer 1

You can’t. Foo is a protected member function of class A, and as such can only be used from within class A, or from within a class that inherits from it.

class A 
{
   protected int x() {}
}

class B : A 
{
   void F() 
   {
      A a = new A();  
      B b = new B();  
      a.x();   // Error
      b.x();   // OK
   }
}