System.Collections.ArrayList.IListWrapper.Sort C# (CSharp) Method

            public override void Sort(int index, int count, IComparer comparer)
            {
                if (index < 0 || count < 0)
                    throw new ArgumentOutOfRangeException(index < 0 ? nameof(index) : nameof(count), SR.ArgumentOutOfRange_NeedNonNegNum);
                Contract.EndContractBlock();
                if (_list.Count - index < count)
                    throw new ArgumentException(SR.Argument_InvalidOffLen);

                Object[] array = new Object[count];
                CopyTo(index, array, 0, count);
                Array.Sort(array, 0, count, comparer);
                for (int i = 0; i < count; i++)
                    _list[i + index] = array[i];

                _version++;
            }