why need delegates in c# code example

Example 1: what are delegates and how to use them c#

public delegate void MyDelegate(string text);

Example 2: what are delegates and how to use them c#

myDelegate d1 = new myDelegate(Method1);myDelegate d2 = new myDelegate(Method2);myDelegate multicastDelegate = (myDelegate)Delegate.Combine(d1, d2);multicastDelegate.Invoke();