Difference between new and override

Question

Wondering what the difference is between the following:

Case 1: Base Class

public void DoIt();

Case 1: Inherited class

<         


        

Answer 1

In case 1 if you used call the DoIt() method of the inherited class while the type is declared as the base class you will see the action of the base class even.

/* Results
Class1
Base1
Class2
Class2
*/
public abstract class Base1
{
    public void DoIt() { Console.WriteLine("Base1"); }
}
public  class Class1 : Base1 
{
    public new void DoIt() { Console.WriteLine("Class1"); }
}
public abstract class Base2
{
    public virtual void DoIt() { Console.WriteLine("Base2"); }
}
public class Class2 : Base2
{
    public override void DoIt() { Console.WriteLine("Class2"); }
}
static void Main(string[] args)
{
    var c1 = new Class1();
    c1.DoIt();
    ((Base1)c1).DoIt();

    var c2 = new Class2();
    c2.DoIt();
    ((Base2)c2).DoIt();
    Console.Read();
}