Monday, July 7, 2014

C# Tutorial for Beginners 19 - Polymorphism in C#









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using System;
namespace MyProject.Examples
{
    public class Drawing
    {
        public virtual void Draw()
        {
            Console.WriteLine("This is just a generic drawing object.");
        }
    }
    public class Line : Drawing
    {
        public override void Draw()
        {
            Console.WriteLine("This is a Line.");
        }
    }
    public class Circle : Drawing
    {
        public override void Draw()
        {
            Console.WriteLine("This is a Circle.");
        }
    }
    public class Square : Drawing
    {
        public override void Draw()
        {
            Console.WriteLine("This is a Square.");
        }
    }


    class ExampleOne
    {
        public static void Main()
        {
            Drawing[] dObj = new Drawing[4];
            dObj[0] = new Line();
            dObj[1] = new Circle();
            dObj[2] = new Square();
            dObj[3] = new Drawing();

            foreach (Drawing draw in dObj)
            {
                draw.Draw();
            }
            Console.ReadKey();
        }
    }
}
























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