System.Data.DataTable.SetShadowIndexes C# (CSharp) Method

        private void SetShadowIndexes()
        {
            if (null == _shadowIndexes)
            {
                Debug.Assert(0 == _shadowCount, "unexpected count");
                _shadowIndexes = LiveIndexes;
                _shadowCount = 1;
            }
            else
            {
                Debug.Assert(1 <= _shadowCount, "unexpected negative shadow count");
                _shadowCount++;
            }
        }