Unresponsive UI in WinForms Application When Executing Long-Running Task on BackgroundWorker
I'm attempting to set up This might be a silly question, but I'm working with an scenario with my WinForms application where the UI becomes unresponsive when executing a long-running task using the `BackgroundWorker`. I have a process that takes several seconds to complete, but I would like to ensure that the UI remains responsive during that time. I've implemented the `RunWorkerAsync` method, but it seems that the UI freezes when I start the worker. Here's the relevant part of my code: ```csharp private void btnStart_Click(object sender, EventArgs e) { backgroundWorker1.DoWork += BackgroundWorker1_DoWork; backgroundWorker1.RunWorkerCompleted += BackgroundWorker1_RunWorkerCompleted; backgroundWorker1.RunWorkerAsync(); } private void BackgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { // Simulating long-running task for (int i = 0; i < 100; i++) { System.Threading.Thread.Sleep(100); } } private void BackgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { MessageBox.Show("Task Completed!"); } ``` I've ensured that the long-running logic is inside the `DoWork` event handler. Still, the UI is freezing, and I need to interact with it until the background worker finishes its task. I also tried using `Application.DoEvents()` within the loop, but it's not a recommended solution and doesn't seem to help in this case. Can anyone suggest what I might be doing wrong or how I can keep the UI responsive during this time? I'm using .NET Framework 4.8 for this application. I'm working on a CLI tool that needs to handle this. What's the best practice here? This is part of a larger API I'm building. Has anyone else encountered this? Is this even possible?