Null Coalescing Operator (??) in C#

The .NET Framework provides the Null Coalescing Operator (??) which is a kind of binary operator and enables the developers to quickly check for the null values .

The Null Coalescing Operator (??) in C# can be used with Nullable types as well as reference types .

For example , a??b .If a is not null then assign the value a else take the value b.

Null Coalescing Operator (??) in C#

Below is a sample sourecode demonstrating the usage of Null Coalescing Operator (??) in C#

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace ConsoleApplication1

{

internal class Program

{

// Null Coalescing Operator (??) in C#

private static void Main(string[] args)

{

int? IntValue = null;

int output = IntValue ?? -1;

Console.WriteLine("Result = " + output.ToString());

Console.ReadLine();

}

}

}

C#
​x
 
using System;
​
using System.Collections.Generic;
​
using System.Linq;
​
using System.Text;
​
using System.Threading.Tasks;
​
namespace ConsoleApplication1
​
{
​
internal class Program
​
{
​
// Null Coalescing Operator (??) in C#
​
private static void Main(string[] args)
​
{
​
int? IntValue = null;
​
int output = IntValue ?? -1;
​
Console.WriteLine("Result = " + output.ToString());
​
Console.ReadLine();
​
}
​
}
​
}

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Null Coalescing Operator (??) in C#

Null Coalescing Operator (??) in C#

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