Type.IsInstanceOfType Method

using System;
public interface IMyIfc {}
public class MyClass : IMyIfc {}
public class MyDerivedClass : MyClass {}
class IsInstanceTest 
{
    public static void Main() 
    {
        Type imyifcType=typeof(IMyIfc);
        MyClass mc = new MyClass();
        Type mcType = mc.GetType();
        MyClass mdc = new MyDerivedClass();
        Type mdcType = mdc.GetType();
        int [] array  = new int [10];
        Type arrayType = typeof(Array);
        Console.WriteLine("Is int[] an instance of the Array class? {0}.", arrayType.IsInstanceOfType(array));
        Console.WriteLine("Is myclass an instance of MyClass? {0}.", mcType.IsInstanceOfType(mc));
        Console.WriteLine("Is myderivedclass an instance of MyClass? {0}.", mcType.IsInstanceOfType(mdc));
        Console.WriteLine("Is myclass an instance of IMyIfc? {0}.", imyifcType.IsInstanceOfType(mc));
        Console.WriteLine("Is myderivedclass an instance of IMyIfc? {0}.", imyifcType.IsInstanceOfType(mdc));
    }
}