If you need info about creating, handling arrays:
Array tutorial[
^]
If you need info about general file reading stuff like ReadAllText ReadAllLines etc:
System.IO.File[
^]
If you arent happy with just File class:
System.IO.TextReader[
^]
If you want a general purpose timer:
System.Timers.Timer[
^]
There are alternatives to timer class like using threads and use thread.sleep to manage timing checkout
System.Threading.Thread[
^] also there are many articles and Q&A in CodeProject as well. For instance
How to pass ref parameter to the thread[
^].
Good luck.