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

NullCoalescingAssignmentOperator.cs

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

// With null coalescing assignment operator
string name ??= "Unknown";



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

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



/* Example-3 - General usage */
// Without null coalescing assignment operator
if (variable is null)
{
    variable = expression;
}

// With null coalescing assignment operator
variable ??= expression;