How do I stop BackgroundWorker?

Table of Contents

BackgroundWorker has its own, unique way of doing cancellation. First, when constructing the BGW instance, be sure to set BackgroundWorker. WorkerSupportsCancellation to true . Then, the calling code can request the worker to cancel by calling BackgroundWorker.

How to start BackgroundWorker?

To start the operation, call RunWorkerAsync. To receive notifications of progress updates, handle the ProgressChanged event. To receive a notification when the operation is completed, handle the RunWorkerCompleted event.

What is BackgroundWorker in vb net?

BackgroundWorker handles long-running tasks. It does not freeze the entire program as this task executes. The BackgroundWorker type provides an excellent solution. It enables a simple multithreaded architecture for VB.NET programs. To begin, you will need a VB.NET Windows Forms project open.

Is BackgroundWorker threaded?

BackgroundWorker, is a component in . NET Framework, that allows executing code as a separate thread and then report progress and completion back to the UI.

What is RunWorkerAsync C#?

RunWorkerAsync() Starts execution of a background operation. RunWorkerAsync(Object) Starts execution of a background operation.

Is background thread C#?

Background threads are threads which will get terminated when all foreground threads are closed. The application won’t wait for them to be completed. We can create a background thread like following: Thread backgroundThread = new Thread(threadStart);

What is the difference between BackgroundWorker and thread?

BackgroundWorker has already implemented functionality of reporting progress, completion and cancellation – so you don’t need to implement it by yourself. Usage of Thread gives you more control over the async process execution (e.g. thread priority or choosing beetween foreground/background thread type).

How do I cancel the asynchronous operation of the backgroundworker?

This code example is part of a larger example provided for the BackgroundWorker class. Private Sub cancelAsyncButton_Click ( _ ByVal sender As System.Object, _ ByVal e As System.EventArgs) _ Handles cancelAsyncButton.Click ‘ Cancel the asynchronous operation.

How to force the termination of a background worker?

You can’t force the termination of a background worker, it simply isn’t designed for that. You have 3 options, in the order in which I would use them. 1) If you use .NET 4.0 you can use the TPL, Sacha Barber has written a series of articles on the subject.

Why does my polling loop Miss cancellationpending in dowork?

Be aware that your code in the DoWork event handler may finish its work as a cancellation request is being made, and your polling loop may miss CancellationPending being set to true.