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

I know question is years old, but here is a Rx implementation. It handles the length % chunkSize != 0 problem out of the box:

   public static IEnumerable Chunkify(this string input, int size)
        {
            if(size < 1)
                throw new ArgumentException("size must be greater than 0");

            return input.ToCharArray()
                .ToObservable()
                .Buffer(size)            
                .Select(x => new string(x.ToArray()))
                .ToEnumerable();
        }