//C# Redefinition - Overridable en Overrides Object Oriented Programming
public class Class1 {
    public virtual void Method1() {
        Method1 = "Class1.Method1()";
    }
}
public class Class2 : Class1 {
    public override void Method1() {
        Method1 = "Class2.Method1()";
    }
}
public class Example1 {
    void Main() {
        Class1 object1 = new Class1();
        Console.WriteLine(object1.Method1());
        Class2 object2 = new Class2();
        Console.WriteLine(object2.Method1());
        Console.ReadLine();
    }
}
public class Class3 {
    public virtual void Method1() {
        Method1 = "Class3.Method1()";
    }
    public virtual void Method1(string argument) {
        Method1 = (("Class3.Method1(" + argument) 
                    + ")");
    }
}
public class Class4 : Class3 {
    public override void Method1() {
        Method1 = "Class4.Method1()";
    }
    public virtual void Method1(string argument) {
        Method1 = (("Class4.Method1(" + argument) 
                    + ")");
    }
    public virtual void Method1(string argument1, string argument2) {
        Method1 = (((("Class4.Method1(" + argument1) 
                    + ",") 
                    + argument2) 
                    + ")");
    }
}
public class Class5 : Class4 {
    public override void Method1() {
        Method1 = "Class5.Method1()";
    }
}
public class Example2 {
    void Main() {
        Class3 object1 = new Class3();
        Console.WriteLine(object1.Method1());
        Console.WriteLine(object1.Method1("test"));
        Class4 object2 = new Class4();
        Console.WriteLine(object2.Method1());
        Console.WriteLine(object2.Method1("test"));
        Console.WriteLine(object2.Method1("test1", "test2"));
        Class5 object3 = new Class5();
        Console.WriteLine(object3.Method1());
        Console.WriteLine(object3.Method1("test"));
        Console.WriteLine(object3.Method1("test1", "test2"));
        Console.ReadLine();
    }
}
public class Counter {
    protected int m_Value;
    public virtual int Value {
        get {
            Value = this.m_Value;
        }
    }
    public virtual void Raise() {
        this.m_Value += new System.EventHandler(1);
    }
    public virtual void Lower() {
        this.m_Value = 1;
    }
}
public class Example3 {
    void Main() {
        Counter counter = new Counter();
        Console.WriteLine(counter.Value);
        counter.Raise();
        Console.WriteLine(counter.Value);
        counter.Raise();
        Console.WriteLine(counter.Value);
        counter.Lower();
        Console.WriteLine(counter.Value);
        Console.ReadLine();
    }
}
public class SpecialCounter : Counter {
    private int m_StepValue = 1;
    public virtual int StepValue {
        get {
            StepValue = this.m_StepValue;
        }
        set {
            this.m_StepValue = value;
        }
    }
    public override void Raise() {
        this.m_Value += new System.EventHandler(StepValue);
    }
    public override void Lower() {
        m_Value = StepValue;
    }
}
public class Example4 {
    void Main() {
        SpecialCounter specialCounter = new SpecialCounter();
        Console.WriteLine(specialCounter.Value);
        specialCounter.StepValue = 5;
        specialCounter.Raise();
        Console.WriteLine(specialCounter.Value);
        specialCounter.Raise();
        Console.WriteLine(specialCounter.Value);
        specialCounter.Lower();
        Console.WriteLine(specialCounter.Value);
        Console.ReadLine();
    }
}
public class Person {
    private string m_Name;
    public Person(string name) {
        this.Name = name;
    }
    public virtual string Name {
        get {
            Name = this.m_Name;
        }
        set {
            this.m_Name = value;
        }
    }
}
public class Student : Person {
    private string m_ClassGroup;
    public Student(string name, string classGroup) {
        base.New(name);
        this.ClassGroup = classGroup;
    }
    public virtual string ClassGroup {
        get {
            ClassGroup = this.m_ClassGroup;
        }
        set {
            this.m_ClassGroup = value;
        }
    }
    public override void ToString() {
        ToString = (((Name + " (") 
                    + ClassGroup) 
                    + ")");
    }
}
public class Example5 {
    public virtual void Main() {
        Person person1 = new Person("John");
        Console.WriteLine(person1.ToString());
        Student student1 = new Student("Jane", "Visual Basic");
        Console.WriteLine(student1.ToString());
        Console.ReadLine();
    }
}
public class Counter {
    public override void ToString() {
        ToString = Value.ToString();
    }
}
public class SpecialCounter {
    public override void ToString() {
        ToString = ((base.ToString() + " - Step : ") 
                    + StepValue.ToString());
    }
}
public class Example6 {
    void Main() {
        Counter counter1 = new Counter();
        Console.WriteLine(counter1.ToString());
        SpecialCounter specialCounter1 = new SpecialCounter();
        Console.WriteLine(specialCounter1.ToString());
        Console.ReadLine();
    }
}
public class Employee {
    private decimal m_MonthlySalary;
    public virtual decimal MonthlySalary {
        get {
            MonthlySalary = this.m_MonthlySalary;
        }
        set {
            this.m_MonthlySalary = value;
        }
    }
    public virtual void GetYearlySalary() {
        GetYearlySalary = (MonthlySalary * 12);
    }
}
public class Manager : Employee {
    private decimal m_Bonus;
    public virtual decimal Bonus {
        get {
            Bonus = this.m_Bonus;
        }
        set {
            this.m_Bonus = value;
        }
    }
    public override void GetYearlySalary() {
        GetYearlySalary = (base.GetYearlySalary() + Bonus);
    }
}
public class Exercise1Solution {
    public virtual void Main() {
        Employee employee1 = new Employee();
        employee1.MonthlySalary = 1000;
        Console.WriteLine(employee1.GetYearlySalary());
        Manager manager1 = new Manager();
        manager1.MonthlySalary = 2000;
        manager1.Bonus = 10000;
        Console.WriteLine(manager1.GetYearlySalary());
        Console.ReadLine();
    }
}
public class Exercise2Task {
    void Main() {
        Addition addition1 = new Addition(3, 4);
        Console.WriteLine(addition1.GetSum());
        Console.WriteLine(addition1.ToString());
        addition1.Operand1 = 5;
        addition1.Operand2 = 6;
        Console.WriteLine(addition1.GetSum());
        Console.WriteLine(addition1.ToString());
        Console.ReadLine();
    }
}
public class Addition {
    private int m_Operand1;
    private int m_Operand2;
    public Addition(int operand1, int operand2) {
        this.Operand1 = operand1;
        this.Operand2 = operand2;
    }
    public virtual int Operand1 {
        get {
            Operand1 = this.m_Operand1;
        }
        set {
            this.m_Operand1 = value;
        }
    }
    public virtual int Operand2 {
        get {
            Operand2 = this.m_Operand2;
        }
        set {
            this.m_Operand2 = value;
        }
    }
    public virtual void GetSum() {
        GetSum = (Operand1 + Operand2);
    }
    public override void ToString() {
        ToString = ((((Operand1 + " + ") 
                    + Operand2) 
                    + " = ") 
                    + this.GetSum());
    }
}
public class Exercise3Task {
    void Main() {
        Airport airport1 = new Airport("ZAV", "Brussels");
        Airport airport2 = new Airport("NYK", "New York Kennedy");
        Flight flight1 = new Flight(airport1, airport2);
        Flight flight2 = new Flight(airport2, airport1);
        Holiday holiday1 = new Holiday();
        holiday1.Add(flight1);
        holiday1.Add(flight2);
        Console.WriteLine(holiday1.Item(index).ToString());
        Console.ReadLine();
    }
}
public class Holiday {
    private Flight[] m_Items;
    private int m_Count;
    public virtual int Count {
        get {
            Count = this.m_Count;
        }
    }
    public virtual Flight this[int index] {
        get {
            Item = this.m_Items(index);
        }
    }
    public virtual void Add(Flight flight) {
        this.m_Items(Count) = flight;
        this.m_Count += new System.EventHandler(1);
    }
}
public class Flight {
    private Airport m_Departure;
    private Airport m_Arrival;
    public Flight(Airport departure, Airport arrival) {
        this.Departure = departure;
        this.Arrival = arrival;
    }
    public virtual Airport Departure {
        get {
            Departure = this.m_Departure;
        }
        set {
            this.m_Departure = value;
        }
    }
    public virtual Airport Arrival {
        get {
            Arrival = this.m_Arrival;
        }
        set {
            this.m_Arrival = value;
        }
    }
    public override void ToString() {
        ToString = ((Departure.ToString() + " -> ") 
                    + Arrival.ToString());
    }
}
public class Airport {
    private string m_Code;
    private string m_Name;
    public Airport(string code, string Name) {
        this.Code = code;
        this.Name = Name;
    }
    public virtual string Code {
        get {
            Code = this.m_Code;
        }
        set {
            this.m_Code = value;
        }
    }
    public virtual string Name {
        get {
            Name = this.m_Name;
        }
        set {
            this.m_Name = value;
        }
    }
    public override void ToString() {
        ToString = ((Code + " : ") 
                    + Name);
    }
}
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//Copyright - De Wolf / vbvoorbeelden - 2003-2010 - Alle rechten voorbehouden.