CheckValidNumber

Question 1

What does this check?
if (Regex.IsMatch(Item, “^[0-9]+$”))

Answer 1

Confirms that Item is purely digits (no operators or negative signs).

Question 2

What does this do?
if (ItemAsInteger > 0 && ItemAsInteger <= MaxNumber)

Answer 2

ensures it’s in range (1 to MaxNumber)

Question 3

What is the main purpose of this method?

Answer 3

method used in checking numeric tokens. Helps avoid invalid strings from messing with the game.