/******************************************************************************

​

                            Online C# Compiler.

                Code, Compile, Run and Debug C# program online.

Write your code in this editor and press "Run" button to execute it.

​

*******************************************************************************/

​

using System;

class HelloWorld {

  static void Main() {

    Console.WriteLine("Hello World");

    Nested1 testCase = new Nested1();

    try

    {

        if(testCase?.nestedtwo?.nestedthree?.GetString() != null)

        {

            Console.WriteLine("Not Null");

        }

        else

        {

            Console.WriteLine("Null");

        }

    }

    catch(Exception _)

    {

        Console.WriteLine("Exception");

    }

  }

}

​

public class Nested1

{

    public class Nested2

    {

        public class Nested3

        {

            public string foobar = "Bleh";

            public string GetString()

            {

                Console.WriteLine("We're in GetString");

                return foobar;

            }

        }

        public Nested3 nestedthree = null;

    }

    public Nested2 nestedtwo = null;

}

​