Step 1: Click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "TimerControl" and then click OK
Step 2: Design your form as below

Step 3: Add code to handle your form as below
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 TimerControl
{
public partial class Form1 : Form
{
int value;
public Form1()
{
InitializeComponent();
}
private void timer1_Tick(object sender, EventArgs e)
{
//Update textbox
txtValue.Text = (value++).ToString();
}
private void btnStart_Click(object sender, EventArgs e)
{
if(int.TryParse(txtValue.Text, out value))
{
timer1.Start();
}
}
private void btnStop_Click(object sender, EventArgs e)
{
timer1.Stop();
}
}
}
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