Timer with question in C#

This snippet of code is for a question in C#, with a live timer running at the same time.

First, we create some static variables

static int CountDown = 60;

static List<char> AllCharacters = new();

static bool HasAnsweredPrompt = false;

static ConsoleKeyInfo CurrentCharacter;

• The CountDown variable stores how long the timer has left. To start, it is set to 60 seconds.
• The AllCharacters variable will store what the user types.
• The HasAnsweredPrompt will become true when the user types ENTER
• The CurrentCharacter stores the current character that the user has typed.

Next is our Main method

System.Timers.Timer timer = new (1000);

• This code may look scary, but it is just creating a new Timer, which will update every second.
• The 1000 stands for 1000 milliseconds

timer.Elapsed += UpdateTimer;
timer.Enabled = true;

• This piece of code tells the Timer that every second, it should call the UpdateTimer method.
• Next is just starts the timer!

Console.WriteLine("What is Heisenberg's real name?");

• This will be your question, and it could be anything you want.

while(!HasAnsweredPrompt) {
}

• This while loop will keep repeating until the users pressed enter.

These next pieces of code are inside the while loop.

CurrentCharacter = Console.ReadKey(true);

• This reads in one char from the user, and stores it in the CurrentChar variable
• Note that the true means that the ReadKey will not output to the console.

if(CurrentCharacter.Key == Console.Enter) {
    HasAnsweredPrompt = true;
    break;
}

• This checks if the key that the user entered is ENTER
• If it is, then it sets HasAnsweredPrompt to true
• It then breaks out of the loop

Console.SetCursorPos(0, 2);
AllCharacters.Add(CurrentCharacter.KeyChar);

• This sets the position of the cursor to the second line
• It then adds the CurrentCharacter to the list of them.

for(int i = 0; i < AllCharacters.Count; i++) {
    Console.Write(AllCharacters[i]);
}

• Here, we use a for loop to print out the characters in order, creating a string.
• Because the chars are in order, it recreated what the user entered.

The for loop ends here

static void UpdateTimer(object source, ElapsedEventArgs e) {
    if(HasAnsweredPrompt) return;
    if(CountDown-- <= 0) return;

    Console.SetCursorPos(0, 1);
    Console.WriteLine(CountDown + " Seconds Left!");
}

• Here we check if the user has finished typing ( by pressing enter )
• If they haven't, then we continue on
• We also check if the timer has finished
• We set the cursor's position to the first line
• We print out how many seconds are left