Returning value from threads
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can anyone tell me, how can i return values from threads in C#? Reply will be appreciated Thanx in advance
You will have to drop the return value in a place that is accessable by another thread. You will have to protect the storage with a mutex, also add a condition to signal the other thread that processing is done. This is needed because processes can't return things to eachother, instead they storage data that has to be exchanged in a central place that is accessable by others. These two steps start the threads and let the first thread wait for a signal of the other thread. Thread 1 -> Thread2.Start(); Thread 1 -> Condition.Wait(); These steps are performed by the second thread in such a way that the storage can only be accessed by one party at a time. After the second thread is done, it will signal the first thread that it's done. Thread 2 -> Mutex.Lock(); Thread 2 -> Set some value Thread 2 -> Mutex.Unlock(); Thread 2 -> Condition.Signal(); These last steps are performed after the first thread gets a signal that the second thread is done. Thread 1 -> Mutex.Lock(); Thread 1 -> Get value Thread 1 -> Mutex.Unlock(); I'm not sure to what extend Microsoft implemented threading and concurrency tools, but if you don't have the Mutex or the Condition, you can do it with a Semaphore. The same trick, except for these changes: Thread 1 -> Semaphore.P(); Thread 2 -> Set value in storage Thread 2 -> Semaphore.V(); Thread 1 -> Get value from storage This classic is also called the producer/consumer scenario.
WM.
What about weapons of mass-construction?