C#.NET - Null Coalescing Operator (??) Example

NullCoalescingOperator.cs

/* Example-1 */
// Without null coalescing operator
string name = GetUserName();
if (name == null)
{
    name = "Unknown";
}

// With null coalescing operator
string name = GetUserName() ?? "Unknown";



/* Example-2 */
// Without null coalescing operator
string country = user.Country != null ? user.Country : "US";

// With null coalescing operator
string country = user.Country ?? "US";



/* Example-3 */
// With null coalescing operator
public string Name
{
    get => name;
    set => name = value ?? throw new ArgumentNullException(nameof(value), "Name cannot be null");
}