Method Overriding

Question

Hi All,

Why we need method overriding? instead of we can create new method

 

EX:

class Employee

{

public string GetName()

{

 

} 

public virtual string SayHello()

{

 return "hello good morning"; 

} 

} 

 

Class Student:Employee

{

 public override string SayHello()

{

return "Hello good Night"; 

} 

}

 

 

Here my question is instead of overriding SayHello() we can create New method SayHello 

 

Class Student:Employee

{

public string SayHello()

{

return "Hello good Night";

}

}

 

please explain.

 

 

Thanks,

Manohar G