using System;

public class Program

{

    static void HandleNullReference()

    {

        Program prog = null;

        try

        {

            Console.WriteLine(prog.ToString());

        }

        catch (NullReferenceException ex)

        {

        Console.WriteLine(ex.Message);

        }

        catch (ArgumentException ex)

        {

        Console.WriteLine("From ArgumentException: " + ex.Message);

        }

        catch (Exception ex)

        {

        Console.WriteLine("From Exception: " + ex.Message);

        }

        finally

        {

        Console.WriteLine("Finally always executes.");

        }

    }

}

​

/*

1. code to be monitored for exceptions goes in the try block 

2. code that handles a potential exception goes in a catch block

​

The catch block parameter indicates that it can catch a NullReferenceException if the code inside of the try

block throws that exception type.

​

The body of the catch block is where you perform any exception handling

​

You can customize exception handling with multiple catch blocks

​

​

*/