Split C# collection into equal parts, maintaining sort

Question

I am trying to split a collection into multiple collections while maintaining a sort I have on the collection. I have tried using the following extension method, but it breaks

Answer 1

    public static IEnumerable> Split(this IEnumerable list, int parts)
    {
        int nGroups = (int)Math.Ceiling(list.Count() / (double)parts);

        var groups = Enumerable.Range(0, nGroups);

        return groups.Select(g => list.Skip(g * parts).Take(parts));
    }