/*************************************

/* Copyright (c) 2012 mumuZ

 * 

 * Author：mumuZ

 * Blog：o  http://www.cnblogs.com/lnetmor/

 * Email：o lnetmor@gmail.com

 * 

 */

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Threading;

namespace ThreadIsSoEasy_MonDontCare_

{

    public partial class Form1 : Form

    {

        private Thread primeNumberThread;

        public delegate void UpdateData(string returnVal);

        public delegate void UpdateButtonControl(string id, string isEnabled);

        private CancellationTokenSource cancellationTokenSource;

        public Form1()

        {

            InitializeComponent();

            cmdStart.Enabled = true;

            cmdStop.Enabled = false;

        }

        private void cmdStart_Click(object sender, EventArgs e)

        {

            lstPrime.Items.Clear();

            cancellationTokenSource = new CancellationTokenSource();

            cmdStop.Enabled = true;

            cmdStart.Enabled = false;

            ThreadPool.QueueUserWorkItem(o => GeneratePrimeNumbers(cancellationTokenSource.Token));

        }

        private void cmdStop_Click(object sender, EventArgs e)

        {

            cancellationTokenSource.Cancel();

            cmdStop.Enabled = false;

            cmdStart.Enabled = true;

        }

public void GeneratePrimeNumbers(CancellationToken token)

{

    long lngCounter = 2;

    long lngNumber = 3;

    long lngDivideByCounter;

    bool blnIsPrime;

    long[] PrimeArray = new long[256];

    string[] args = new string[] { "2" };

    UpdateData UIDel = new UpdateData(UpdateUI);

    UpdateButtonControl UIControl = new UpdateButtonControl(UpdateButtonState);

    //We know that the first prime is 2.

    //Therefore, let's add it to the list and start from 3.

    PrimeArray[1] = 2;

    //lstPrime.Items.Add(2);

    this.Invoke(UIDel, args);

    while (lngCounter < 256)

    {

        blnIsPrime = true;

        if (token.IsCancellationRequested)

        {

            args[0] = "Cancelled!";

            this.Invoke(UIDel, args);

            break;

        }

        //Try dividing this number by any already found prime

        //Which is smaller then the root of this number.

        for (lngDivideByCounter = 1; PrimeArray[lngDivideByCounter]

            * PrimeArray[lngDivideByCounter] <= lngNumber;

            lngDivideByCounter++)

        {

            if (lngNumber % PrimeArray[lngDivideByCounter] == 0)

            {

                //This is not a prime number

                blnIsPrime = false;

                //Exit the loop break;

            }

        }

        //If this is a prime number then display it

        if (blnIsPrime)

        {

            //Guess we found a new prime.

            PrimeArray[lngCounter] = lngNumber;

            //Increase prime found count.

            lngCounter++;

            //lstPrime.Items.Add(lngNumber);

            args[0] = lngNumber.ToString();

            this.Invoke(UIDel, args);

            //Sleep 100 milliseconds.

            //This will simulate the time lag and we'll get time

            //to pause and resume the thread.

            Thread.Sleep(100);

        }

        lngNumber += 2;

    }

    this.Invoke(UIControl, new string[] { "cmdStart", "true" });

    this.Invoke(UIControl, new string[] { "cmdStop", "false" });

}

/*************************************

/* Copyright (c) 2012 mumuZ

 * 

 * Author：mumuZ

 * Blog：o  http://www.cnblogs.com/lnetmor/

 * Email：o lnetmor@gmail.com

 * 

 */

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Threading;

namespace ThreadIsSoEasy_MonDontCare_

{

    public partial class ThreadAbortForm : Form

    {

        private Thread primeNumberThread;

        public delegate void UpdateData(string returnVal);

        public delegate void UpdateButtonControl(string id, string isEnabled);

        public ThreadAbortForm()

        {

            InitializeComponent();

            cmdStart.Enabled = true;

            cmdStop.Enabled = false;

        }

        private void cmdStart_Click(object sender, EventArgs e)

        {

            lstPrime.Items.Clear();

            primeNumberThread = new Thread(new ThreadStart(GeneratePrimeNumbers));

            primeNumberThread.Start();

            cmdStart.Enabled = false;

            cmdStop.Enabled = true;

        }

        private void cmdStop_Click(object sender, EventArgs e)

        {

            primeNumberThread.Abort();

            lstPrime.Items.Add("Cancelled!");

            cmdStart.Enabled = true;

            cmdStop.Enabled = false;

        }