Windows Forms: How to make a Countdown Timer in C#
By FoxLearn 7/11/2017 7:57:02 PM 15.8K
How to make a simple countdown timer in c#
Step 1: Click New Project, then select Visual C# on the left, then Windows and then select Windows Forms Application. Name your project "Countdown" 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 Countdown { public partial class Form1 : Form { System.Timers.Timer t; int h, m, s; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { t = new System.Timers.Timer(); t.Interval = 1000;//1s t.Elapsed += OnTimeEvent; } private void OnTimeEvent(object sender, System.Timers.ElapsedEventArgs e) { Invoke(new Action(() => { s += 1; if (s == 60) { s = 0; m += 1; } if (m == 60) { m = 0; h += 1; } //Update textbox txtResult.Text = string.Format("{0}:{1}:{2}", h.ToString().PadLeft(2, '0'), m.ToString().PadLeft(2, '0'), s.ToString().PadLeft(2, '0')); })); } private void btnStart_Click(object sender, EventArgs e) { t.Start(); } private void btnStop_Click(object sender, EventArgs e) { t.Stop(); } private void Form1_FormClosing(object sender, FormClosingEventArgs e) { //Stop timer t.Stop(); Application.DoEvents(); } } }
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