static void Main(string[] args) { ReferenceTest referenceTest = new ReferenceTest(99); Console.WriteLine(referenceTest.data); ReferenceTest.NullTest(ref referenceTest); if (referenceTest == null) { Console.WriteLine("null"); } else { Console.WriteLine(referenceTest.data); } }
public static void NullTest(ref ReferenceTest referenceTest) { referenceTest = null; }