Splitting a string into chunks of a certain size

Question

Suppose I had a string:

string str = \"1111222233334444\"; 

How can I break this string into chunks of some size?

e.g., breaking t

Answer 1

public static IEnumerable> SplitEvery(this IEnumerable values, int n)
{
    var ls = values.Take(n);
    var rs = values.Skip(n);
    return ls.Any() ?
        Cons(ls, SplitEvery(rs, n)) : 
        Enumerable.Empty>();
}

public static IEnumerable Cons(T x, IEnumerable xs)
{
    yield return x;
    foreach (var xi in xs)
        yield return xi;
}