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Need more help on threads...

I have a main process, with one additional thread which works great. I want to be able to do other things while the separate thread is running, but then when the thread completes, I want to resume the next statement after which I started the thread. (hope that makes sense.)... my code follows:

ParameterizedThreadStart pts = new ParameterizedThreadStart(getISBNPricingData);
Thread t = new Thread(pts);
ArrayList al = new ArrayList();
al.Add(initialISBNRetValue);
al.Add(isbnRetValue);
t.Start(al);
// need to come back here to next statement when thread is finished processing, but not until

How do I do this?

RedKelvin

Hi there,
To do other stuff while the thread is running check to see if the thread is alive, like this

while (t.IsAlive)
{
    //Perform other tasks
}

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Jaime Olivares

you just need:
t.Join()

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RedKelvin

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cookre

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RedKelvin

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rmmarsh

ASKER

I tried thread.join(), but "message pumping" was "suspended", ie I couldn't do anything in the Windows program while the thread was running.

I need to be able to run other tasks in the main form of my Windows program.

Is there a way I can do something like this?
while(signal not received from thread)
sleep();

rmmarsh

ASKER

I also noticed that the join() will "block the calling thread" until the thread terminates... doesn't this mean that my main process (mainForm) will be blocked until the thread terminates? I want to run the thread, and still be able to run other processes (methods) in the windows program.

Hope that makes it clearer...

R

RedKelvin

Yes, the example I provided above will do this

Jaime Olivares

As an alternative, you can use some kind of synchronization event, by example a ManualResetEvent object.

public ManualResetEvent manualEvent; // put as a class member

// do all the thread stuff
ParameterizedThreadStart pts = new ParameterizedThreadStart(getISBNPricingData);
Thread t = new Thread(pts);
ArrayList al = new ArrayList();
al.Add(initialISBNRetValue);
al.Add(isbnRetValue);

manualEvent = new ManualResetEvent(false);
t.Start(al);
manualEvent.WaitOne();

// inside the thread
void getISBNPricingData(ArrayList array)
{
// do all your stuff
manualEvent.Set();
}

rmmarsh

ASKER

Thank you all; it works like a champ!

rmmarsh

ASKER

Thank you all; it works like a champ!