what is "public new virtual void Method()" mean?
<p>when use new virtual key words to decorate the method? what is the affection? Like define an interface, and add a class to inherit the interface. but use the new virtual to realize the interface method.</p>

<pre><code> interface IPrinter
{
    void Print();
}

 public class PrinterOne : IPrinter
{
    public void Print() 
    {
        Console.WriteLine("PrinterOne.");
    }
}

public class PrinterTwo : PrinterOne
{
    public new virtual void Print()
    {
        Console.WriteLine("PrinterTwo.");
    }
}

public class PrinterThree : PrinterTwo
{
    public override void Print()
    {
        Console.WriteLine("PrinterThree.");
    }
}

public class PrinterFour : PrinterThree
{
    public override void Print()
    {
        Console.WriteLine("PrinterFour.");
    }
}

 static void Main(string[] args)
    {
        IPrinter iprinter = new PrinterFour();
        iprinter.Print();//the output is PrinterOne? why???
        Console.ReadLine();
    }
</code></pre>
