Windows窗体应用程序C＃中的背景工作者不会阻止UI

Question

I am using background worker in my win form application I am showing progress bar form for a long running process and that long running process is on background worker.

Note: I have used background worker for showing progress bar in marquee style.

Problem I am facing is due to background worker my User interface gets responsive, but I don't want it to be responsive.

My code is as below:

ProgressBarForm progForm = new ProgressBarForm();
progForm.Show();
BackgroundWorker worker = new BackgroundWorker();
worker.DoWork+= myMethod;
worker.RunWorkerAsync();

Answer 1

Considering that you are using a form to display the progress, you can use ShowDialog instead of Show . This will open the window as a modal dialog, blocking UI actions to your underlying window until the progress window is closed.

Some things to consider:

• ShowDialog is a blocking call, so call it after starting the background worker.
• Make sure the user can't close the window, and programmatically close the window yourself after the background worker completes.

Answer 2

If you don't want your user interface to be used, set .Enabled = false; on each of the form controls, then reverse the changes in _RunWorkerCompleted.

Just remember to leave any cancel / close buttons enabled :)