This BackgroundWorker is currently busy and cannot run multiple tasks concurrently

Question

I get this error if I click a button that starts the backgroundworker twice.

This BackgroundWorker is currently busy and cannot run multiple tasks concurrent         


        

Answer 1

Create a new BackgroundWorker object for each operation that you want to perform. I.e., rather than:

BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += new DoWorkEventHandler(worker_DoWork);
for (int i; i < max; i++) {
   worker.RunWorkerAsync(i);
}

Try this:

for (int i; i < max; i++) {
   BackgroundWorker worker = new BackgroundWorker();
   worker.DoWork += new DoWorkEventHandler(worker_DoWork);
   worker.RunWorkerAsync(i);
}