//Visual Basic 2008/2010 Inheritance ( Overerving ) - Inherits Object Oriented Programming
public class SettableCounter : Counter {
    public virtual void SetValue(int value) {
        m_Value = value;
    }
}
public class Client2 {
    void Main() {
        Counter counter1 = new Counter();
        Console.WriteLine((GetValue() == 0));
        Raise();
        Console.WriteLine((GetValue() == 1));
        Lower();
        Console.WriteLine((GetValue() == 0));
        SettableCounter specialCounter1 = new SettableCounter();
        Console.WriteLine((GetValue() == 0));
        SetValue(10);
        Console.WriteLine((GetValue() == 10));
        Raise();
        Console.WriteLine((GetValue() == 11));
        Lower();
        Console.WriteLine((GetValue() == 10));
        Console.ReadLine();
    }
}
//Bezoek www.vbvoorbeelden.be voor meer C# voorbeelden.
//Copyright - De Wolf / vbvoorbeelden - 2003-2010 - Alle rechten voorbehouden.