Windows Forms: How to make an Alarm clock in C#
By FoxLearn 6/26/2017 9:01:21 PM 13.42K
How to make an alarm clock using timer control 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 "AlarmClock" and then click OK
Step 2: Design your form as below
Step 3: Add code to button click event handler 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 AlarmClock { public partial class Form1 : Form { System.Timers.Timer timer; public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { timer = new System.Timers.Timer(); timer.Interval = 1000; timer.Elapsed += Timer_Elapsed; } private void Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e) { DateTime currentTime = DateTime.Now; DateTime userTime = dateTimePicker.Value; if (currentTime.Hour == userTime.Hour && currentTime.Minute == userTime.Minute && currentTime.Second == userTime.Second) { timer.Stop(); UpdateLable upd = UpdateDataLable; //Update label control in mutiple thread if (lblStatus.InvokeRequired) Invoke(upd, lblStatus, "Stop"); MessageBox.Show("Ring ring ring...", "Message", MessageBoxButtons.OK, MessageBoxIcon.Information); } } //Update label control delegate void UpdateLable(Label lbl, string value); void UpdateDataLable(Label lbl,string value) { lbl.Text = value; } private void btnStart_Click(object sender, EventArgs e) { timer.Start(); lblStatus.Text = "Running..."; } private void btnStop_Click(object sender, EventArgs e) { timer.Stop(); lblStatus.Text = "Stop"; } } }
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