System.Collections.ArrayList.Range.Insert C# (CSharp) Method

            public override void Insert(int index, Object value)
            {
                if (index < 0 || index > _baseSize) throw new ArgumentOutOfRangeException(nameof(index), SR.ArgumentOutOfRange_Index);
                Contract.EndContractBlock();

                InternalUpdateRange();
                _baseList.Insert(_baseIndex + index, value);
                InternalUpdateVersion();
                _baseSize++;
            }