methods with no names are called as annonymous methods 

when two or more programing elements eg.a method  has same
name that of other then one method is hiden and has no
reference this is known as shadowing

Anonymous method - those method which does have any name and
type.. while declaration but its type is defined dynamically 
depending upon the type the method

for eg-
int n = 0;
Del d = delegate() { System.Console.WriteLine("Copy #:{0}",
++n); };


shadowing -  if two methods have the same name and
signature. we can  hide the scope of one method to access
another method
using  shadow keyword .

for eg -  we can use tostring() method in our program by 

Public Class Class2
	Inherits Class1
	Shadows Sub MethodA()
		MsgBox(“Method A Class2 called”)
	End Sub
	Overrides Sub MethodB()
		MsgBox(“Method B Class2 called”)
	End Sub
End Class