public InstanceNullCheck()
        {
            SampleData sData = new SampleData();
            if (sData.MyName == String.Empty)
            {
                sData = null;
            }

            WriteLine(sData?.MyName ?? "Field is null.");

            ReadLine();
        }
        public NullConditionalOperator()
        {
            SampleData sData = new SampleData();
            if (sData.MyName == String.Empty)
            {
                sData = null;
            }

            WriteLine(sData != null ? sData.MyName : "Field is null.");

            ReadLine();
        }