How to write C# Scheduler

Question

How do I write a Alert which will run at 00:00, 00:15, 00:30, and so on every day?

Can you give me an example code?

Thank you.

Answer 1

Here is a basic C# scheduler:

using System;
using System.Threading;
using System.Windows.Forms;
using System.IO;

public class TimerExample
{
    public static void Main()
    {
        bool jobIsEnabledA = true;
        bool jobIsEnabledB = true;
        bool jobIsEnabledC = true;

        Console.WriteLine("Starting at: {0}", DateTime.Now.ToString("h:mm:ss"));

        try
        {
            using (StreamWriter writer = File.AppendText("C:\\scheduler_log.txt"))
            {
                while (true)
                {
                    var currentTime = DateTime.Now.ToString("h:mm");

                    if (currentTime == "3:15" && jobIsEnabledA)
                    {
                        jobIsEnabledA = false;
                        ThreadPool.QueueUserWorkItem((state) => { MessageBox.Show(string.Format("Time to brush your teeth! {0}", currentTime) ); });
                    }

                    if (currentTime == "3:20" && jobIsEnabledB)
                    {
                        jobIsEnabledB = false;
                        ThreadPool.QueueUserWorkItem((state) => { MessageBox.Show(string.Format("Time to brush your teeth! {0}", currentTime)); });
                    }

                    if (currentTime == "3:30" && jobIsEnabledC)
                    {      
                        jobIsEnabledC = false;
                        ThreadPool.QueueUserWorkItem((state) => { MessageBox.Show(string.Format("Time for your favorite show! {0}", currentTime)); });
                    }

                    if (currentTime == "3:31")
                    {      
                        jobIsEnabledA = true;
                        jobIsEnabledB = true;
                        jobIsEnabledC = true;
                    }

                    var logText = string.Format("{0} jobIsEnabledA: {1} jobIsEnabledB: {2} jobIsEnabledC: {3}", DateTime.Now.ToString("h:mm:ss"), jobIsEnabledA, jobIsEnabledB, jobIsEnabledC);
                    writer.WriteLine(logText);

                    Thread.Sleep(1000);
                }
            }
        }
        catch (Exception exception)
        {
            Console.WriteLine(exception);
        }
    }
}