Handling Multiple BackgroundWorkers in a WinForms Application without Blocking UI
I'm maintaining legacy code that I'm updating my dependencies and I'm stuck on something that should probably be simple. I'm stuck on something that should probably be simple. I'm developing a WinForms application using .NET Framework 4.8, and I'm working with a performance scenario when trying to run multiple `BackgroundWorker` instances simultaneously. The goal is to execute several long-running tasks (like data processing) without freezing the UI, but when I start multiple workers, the UI becomes unresponsive and eventually throws a `ThreadStateException`. Here’s a simplified version of my implementation: ```csharp private void StartBackgroundTasks() { for (int i = 0; i < 5; i++) { BackgroundWorker worker = new BackgroundWorker(); worker.DoWork += Worker_DoWork; worker.RunWorkerCompleted += Worker_RunWorkerCompleted; worker.RunWorkerAsync(i); } } private void Worker_DoWork(object sender, DoWorkEventArgs e) { int workerId = (int)e.Argument; // Simulating a long-running task System.Threading.Thread.Sleep(5000); e.Result = workerId * 2; // Just an example result } private void Worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (e.behavior != null) { MessageBox.Show(e.behavior.Message); } else { MessageBox.Show($"Task {e.Result} completed"); } } ``` I'm not sure if the question lies in how I'm managing the `BackgroundWorker` instances or if I'm hitting some limitation with the UI thread. I've tried using `Task.Run` instead, but it seems to yield the same unresponsive behavior. Is there a better pattern I should be using for handling multiple concurrent tasks in a WinForms app? Any advice would be greatly appreciated! For context: I'm using C# on Ubuntu. Any help would be greatly appreciated! My development environment is Windows. Thanks in advance! I'd be grateful for any help. Thanks in advance!