We can achieve polymarphism in .Net i.e Compile time polymarphism and Runtime polymarphism. Compiletime Polymarphism achieved by method overloading. Runtime polymarphism achieved by Early Binding or Late Binding. Provide the function pointer to the object at compile time called as Early Binding.

provide the function pointer to the object at runtime called as Late Binding

class emp having the method display()

class dept having the method display()

create objects as in the main function

// Early binding

dim obj as new emp

dim ob as new dept

obj.display()-to call the display method of emp class

ob.display-to call the display method of the dept class

// Late binding

create object in the main class as

object obj

obj=new emp

obj.display()-to call the display of emp class

obj=new dept

obj.display()-to call the display of dept class