Polymorphism In C# With Examples
Polymorphism is an important and fundamental pillar of Object Oriented
Programming.Polymorphism means many forms . Polymorphism is of two types.
1. Compile Time Polymorphism/Method Overloading
2.Runtime Polymorphism/Method Overriding.
Compile Time Polymorphism
Compile time polymorphism is done within a class having two methods with
the same name but should have two different parameters
Runtime Polymorphism
Runtime Polymorphism is implemented when we create a base class with
virtual methods and create derived classes that overide the behavior ofthe base
class's virtual method
Method Overloading Example
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
class Mymath
{
public int Add(int a,int b)
{
return a + b;
}
public int Add(int a, int b, int c)
{
return a + b + c;
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
// Default Program Class
class Program
{
static void Main(string[] args)
{
Mymath obj = new Mymath();
obj.Add();
Console.ReadLine();
}
}
Method Overiding Example
Examples From Three Classes
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
// Derived Class
class Cat:Pet
{
public override void faithful()
{
Console.WriteLine("I
am faithful");
}
}
//Base Class
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
class
Pet
{
public virtual void faithful()
{
Console.WriteLine("I
am faithful");
}
}
//Default Program Class
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
class Program
{
static void Main(string[] args)
{
Cat obj = new Cat();
obj.faithful();
Console.ReadLine();
}
}
