Null-Coalescing Operator In C# Language

Introduction

"Null coalescing" operator is the language features of c#, which provide the sort way to check weather a value is null. ?? operator checks whether the value provided on the left side and right side. If operand is null then return the right-hand operand or if operand is not null then return left-hand operand. For example :

Example

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace null_coalescing_operator_in_c_sharp

{

class Program

{

static void Main(string[] args)

{

//create string, which value is null

string N1 = null ?? "Null value";

//create string, which value is not null

string N2 = "Arvind" ?? "Not empty";

//show value of strings

Console.WriteLine("Show right operand: {0}\nSsow left operand : {1}", N1, N2);

Console.ReadLine();

}

}

}

Output: