[SOLVED]Thread message when all threads finished

Okey I wrote simple code like this->

csharp Code:

Thread[] ts=new Thread[10];
 
for(int i=0;i<10;i++)
{
ts[i]=new Thread(function);
ts[i].IsBackground = true;
ts[i].Start();
}

So my threads are doing some work in background... but I need some kind of MessageBox when all threads stops working... I don`t mean .Join() because it blocks the main thread which is form application...

I tried making another function to check background if ThreadState is stopped... but it doesn`t work...

Is there any way to show that MessageBox when all are stoppped(not on button stopped-aborted) ?
and I can`t change to threadpool or tasks....

Set a variable to the number of tasks. At the end of the thread entry method, atomically decrement that counter and, if it is zero, use an appropriate method to provide notification, e.g. marshal a method call back to the UI thread and update the UI.

I already tried that but my threads some kind of strange(they have inside 2 loops that are working and one runs the other one) so any of that counters can`t work

That makes no sense. It doesn't matter if you have nested loops in your threaded routine, decrement your counter at the end of the method, should the counter be equal to 0 after decrementing you will know that all threads has finished.

I already tried counters and they don`t work.. I tried mutex, lock still no working...
I wouldn`t be asking here if it was that simple

I'm guessing that your thread function contain multiple points of exit.
In that case, you should either redesign the thread function, or encapsulate it in a try-finally, having the finally block decrement the thread count.

If that's not the problem either, and you're desperate to get help, post the actual code..
It would be so much easier if we wouldn't have to guess where your problem is.

I will post part of code that Im trying to make work later today:) so U don`t need to guess...

can you define what you mean by "when all threads stop working" - do you mean when they complete (successfully/unsuccessfully) or another way?

you could use manual/auto reset events, then use WaitHandle.WaitAll to indicate/show when all threads have signaled.

I already figured it out :)
Like Techno said manual reset events works good :)