C# - Timer (System.Windows.Forms)

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 LongProcessHandler

{

    public partial class Form1 : Form

    {

        private Timer myTimer = new Timer();

        private bool systemFlag = false;

        private bool processFlag = false;

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            myTimer.Tick += new EventHandler(TimerEventProcessor1);

            myTimer.Interval = 5000;

            myTimer.Start();

        }

       

        private void TimerEventProcessor1(Object myObject, EventArgs myEventArgs)

        {

            myTimer.Stop();

            CallProcessor1();           

        }

        private void CallProcessor1()

        {

            Process1();

            if (systemFlag)

            {

                myTimer.Tick += new EventHandler(TimerEventCallProcessor2);

                myTimer.Interval = 5000;

                myTimer.Start();

            }

        }

        private void Process1()

        {

            //Some Processing Here....

            systemFlag = true;           

        }

        private void TimerEventCallProcessor2(Object myObject, EventArgs myEventArgs)

        {

            myTimer.Stop();

            CallProcessor2();

            if (processFlag)

            {

                myTimer.Tick += new EventHandler(TimerEventProcessor2Sub1);

                myTimer.Interval = 5000;

                myTimer.Start();

            }

        }

        private void CallProcessor2()

        {

            Process2();           

        }

        private void Process2()

        {

            //Some Processing Here....

           

            processFlag = true;

        }

        private void TimerEventProcessor2Sub1(Object myObject, EventArgs myEventArgs)

        {

            myTimer.Stop();

            CallProcessor2Sub1();

            if (systemFlag)

            {

                myTimer.Tick += new EventHandler(TimerEventCallProcessor3);

                myTimer.Interval = 5000;

                myTimer.Start();

            }

        }

       

        private void CallProcessor2Sub1()

        {

            Process2Sub1A();

            Process2Sub1B();

        }

        private void Process2Sub1A()

        {

            //Some Processing Here....

            processFlag = true;

        }

        private void Process2Sub1B()

        {

            //Some Processing Here....

            processFlag = true;

        }

        private void TimerEventCallProcessor3(Object myObject, EventArgs myEventArgs)

        {

            CallProcessor3();

            if (systemFlag)

            {               

                EndProcess();

            }

        }

        private void CallProcessor3()

        {

            myTimer.Stop();

            Process3();

        }

        private void Process3()

        {           

            systemFlag = true;

        }

        private void EndProcess()

        {

            //Some Processing Here To End To Whole Process....

        }

    }

}