static List<string> SplitString(int chunk, string input)
    {
        List<string> list = new List<string>();
        int cycles = input.Length / chunk;

        if (input.Length % chunk != 0)
            cycles++;

        for (int i = 0; i < cycles; i++)
        {
            try
            {
                if ((i + 1) * chunk < input.Length)
                    list.Add(input.Substring(i * chunk, chunk));
                else
                    list.Add(input.Substring(i * chunk));
            }
            catch
            {

            }
        }
        return list;
    }