Null-Conditional Operator in C# 6.0

Null-Conditional Operator is a new Concept in C# 6.0 that is useful when we want to check the null condition of an object or reference data type.  We can write an in-line null-conditional with the ? and ?? operators.

Syntax:

                Condition ? if true ?? if false

Example:-

namespace ConsoleApplication2

{

    class Program

    {

        class Employee

        {

            public string Name { get; set; }

            public Address EmpAddress { get; set; }

        }

        class Address

        {

            public string HomeAddress { get; set; }

            public string OfficeAddress { get; set; }

        }

        static void Main(string[] args)

        {

            Employee emp = new Employee();

            emp.Name = "Max";

            emp.EmpAddress = new Address()

            {

                HomeAddress = "Street",

                OfficeAddress = "Street1"

            };

            Console.WriteLine(emp?.Name);

            Console.WriteLine((emp?.EmpAddress ?.HomeAddress ?? "Nothing"));

            Console.ReadLine();

        }

    }

}

In the above example I created 2 class and which contain Some of the Properties and in the main method we assign the value to those properties. However, in this Statement,

Console.WriteLine(emp?.Name);

It will show Employee Name if it is not null.

Console.WriteLine((emp?.EmpAddress ?.HomeAddress ?? "Nothing"));

In the above Statement  if emp?.EmpAddress is not null then it will access HomeAddress else it will Show “Nothing “ in EmpAddress.