Token Based Authentication - OWIN & JWT

   what is delegate:-

1. A delegate is like a pointer to a function. 
2. It is a reference type data type and it holds the reference of a method. 
3. All the delegates are implicitly derived from System.Delegateclass.
4. A function can have one or more parameters of different data types, but to pass a function as a parameter, delegate is used

  Syntax:- 

     A delegate can be declared using delegate keyword followed by a function signature as       shown below.

Delegate Syntax:

          <access modifier> delegate <return type> <delegate_name>(<parameters>)

   E.g:-

        public delegate void Print(int value);

Example: C# delegate

class Program

{

    // declare delegate

    public delegate void Print(int value);

    static void Main(string[] args)

    {

        // Print delegate points to PrintNumber

        Print printDel = PrintNumber;

       

        // or

        // Print printDel = new Print(PrintNumber);

           

        printDel(100000);

        printDel(200);

        // Print delegate points to PrintMoney

        printDel = PrintMoney;

        printDel(10000);

        printDel(200);

    }

    public static void PrintNumber(int num)

    {

        Console.WriteLine("Number: {0,-12:N0}",num);

    }

    public static void PrintMoney(int money)

    {

        Console.WriteLine("Money: {0:C}", money);

    }

}