Hi,

I have used a sample from MSDN, which is multithreading application and it is Console Application.

I want to convert this ConsoleApplication into WindowsApplication.

The orginalcode(In ConsoleApplication) is like this ,in MSDN:

using System;
using System.Threading;

public class Worker
{
    // This method will be called when the thread is started.
    public void DoWork()
    {
        while (!_shouldStop)
        {
            Console.WriteLine("worker thread: working...");
        }
        Console.WriteLine("worker thread: terminating gracefully.");
    }
    public void RequestStop()
    {
        _shouldStop = true;
    }
    // Volatile is used as hint to the compiler that this data
    // member will be accessed by multiple threads.
    private volatile bool _shouldStop;
}

public class WorkerThreadExample
{
    static void Main()
    {
        // Create the thread object. This does not start the thread.
        Worker workerObject = new Worker();
        Thread workerThread = new Thread(workerObject.DoWork);

        // Start the worker thread.
        workerThread.Start();
        Console.WriteLine("main thread: Starting worker thread...");

        // Loop until worker thread activates.
        while (!workerThread.IsAlive);

        // Put the main thread to sleep for 1 millisecond to
        // allow the worker thread to do some work:
        Thread.Sleep(1);

        // Request that the worker thread stop itself:
        workerObject.RequestStop();

        // Use the Join method to block the current thread 
        // until the object's thread terminates.
        workerThread.Join();
        Console.WriteLine("main thread: Worker thread has terminated.");
    }
}

Sample Output

main thread: starting worker thread...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: working...
worker thread: terminating gracefully...
main thread: worker thread has terminated

So as to convert ConsoleApplication to WindowsApplication

I have changed some code

My code looks like this:

My form is having a button,a richtextbox

I am starting the process in button click event.

I am populating the messages in richtextbox.

My code

-----------------

namespace CreateAndTerminateThreads
{
public delegate void StatusHandler(string progress);

public partial class Form1 : Form
{

Worker workerObject = null;
public Form1()
{
InitializeComponent();
workerObject = new Worker();
}

//Form Load
private void Form1_Load(object sender, EventArgs e)
{
workerObject.Status += new StatusHandler(worker_Status);
}

private void btnStartProcess_Click(object sender, EventArgs e)
{

// Create the thread object. This does not start the thread.
Thread workerThread = new Thread(workerObject.DoWork);

// Start the worker thread.
workerThread.Start();

richTextBox1.AppendText("main thread: Starting worker thread..." + Environment.NewLine);

// Loop until worker thread activates.
//Eventhough the
while (!workerThread.IsAlive) ;

// Put the main thread to sleep for 1 millisecond to
// allow the worker thread to do some work:
Thread.Sleep(1);

// Request that the worker thread stop itself:
workerObject.RequestStop();

// Use the Join method to block the current thread
// until the object's thread terminates.
workerThread.Join();

richTextBox1.AppendText("main thread: Worker thread has terminated." + Environment.NewLine);
richTextBox1.Refresh();

}

void worker_Status(string progress)
{
if ( richTextBox1.InvokeRequired)
{
richTextBox1.BeginInvoke(new StatusHandler(worker1_Status), new object[] { progress });

// If I use, richTextBox1.Invoke(new StatusHandler(worker1_Status), new object[] { progress });

//Output is not comming.

}
else
{
richTextBox1.AppendText(progress + Environment.NewLine);
richTextBox1.Refresh();
}

}

}

public class Worker
{

public event StatusHandler Status;

// This method will be called when the thread is started.
public void DoWork()
{
while (!_shouldStop)

{
Status("worker thread: working..."+i.ToString ());
}

Status("worker thread: terminating gracefully" );

}

public void RequestStop()
{
_shouldStop = true;
}
// Volatile is used as hint to the compiler that this data
// member will be accessed by multiple threads.
private volatile bool _shouldStop ;
}
}

Output

---------------------

main thread: Starting worker thread...
main thread: Worker thread has terminated.
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: working
worker thread: terminating gracefully

Actullay in the output,the second line should come as a lastline.

What is problem in my code ?

If problem exists,How can I solve that ?

Kindly help me....

Waiting for the reply.....

With Regards,

Viswa.

Easier you can use BackgroundWorker component - soins your work on a background thread. Is has a very easy to use interface.You can use predefined events

DoWork - fopr your DoWork

ProgressChanged - for you Status

RunWorkerCompleted - when is comepleted

You can start the background thread:

BackgroundWorker.RunWorkerAsync

more info:

http://msdn2.microsoft.com/en-us/library/system.componentmodel.backgroundworker(VS.90).aspx#Mtps_DropDownFilterText