How to create a countdown timer in C#?

Question

Windows Forms

I have a code that displays text with a typewriter effect, I need the user to press the button where the countdown timer appears, but I pre-set the time (for example, 2 hours), to stop the timer, he needs to enter a password if the password matches then a message comes out. Part of the code that I was able to do myself.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GoGoBoom_v2
{
public partial class Form1 : Form
{
public Form1()
{
string text = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. of Lorem Ipsum.";
int countEntered = 0;
Timer t = new Timer() { Interval = 50 };
t.Tick += (s, _) =>
{
textBox1.Text = text.Substring(0, ++countEntered);

if(countEntered >= text.Length) t.Enabled = false;
};

t.Start();
InitializeComponent();
}




private void buttonYes_Click(object sender, EventArgs e)
{

}
}
}

Help me finish the code.

Answer 1

Add a textbox and check the entered text, if it matches the password then turn off the timer or do some other action.