Program:

The source code to demonstrate the anonymous method is given below. The given program is compiled and executed successfully on Microsoft Visual Studio.

//C# Program to demonstrate the anonymous method.
using System;

delegate void MyDel(int n1, int n2);
class Sample
{
    static void Main()
    {
        MyDel M = delegate(int n1, int n2)
        {
            Console.WriteLine("Sum: "+(n1+n2));
        };


        M(5,2);
        
        M = new MyDel(TestClass.Multiply);
        M(5,2);
    }
    static void Multiply(int n1, int n2)
    {
        Console.WriteLine("Multiply: " + (n1 * n2));
    }
}

Output:

Sum: 7
Multiply: 10
Press any key to continue . . .

Explanation:

In the above program, we created a Sample class that contains two static methods Main() and Multiply().

delegate void MyDel(int n1, int n2);

Here we defined a delegate MyDel, the delegate is similar to the function pointer in C. It is initialized with the name of the method, and then we can call the method using a delegate.

MyDel M = delegate(int n1, int n2)
{
    Console.WriteLine("Sum: "+(n1+n2));
};

Here we defined an anonymous method and initialized with delegate instance "M" and then we called the method using instance "M".

M = new MyDel(TestClass.Multiply);
M(5,2);

In the above code, we re-instantiate the "M" with the method "Multiply" and then call the multiply method using delegate "M".