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Questions tagged [backgroundworker]

BackgroundWorker is a helper class in .NET's System.ComponentModel namespace providing a general implementation of the Event-Based Asynchronous Pattern to manage a worker thread, support cooperative cancellation, and report progress.

BackgroundWorker is a helper class in .NET's System.ComponentModel namespace providing a general implementation of the Event-Based Asynchronous Pattern to manage a worker thread, support cooperative cancellation, and report progress.

3484 questions
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The calling thread cannot access this object because a different thread owns it

My code is as below public CountryStandards() { InitializeComponent(); try { FillPageControls(); } catch (Exception ex) { MessageBox.Show(ex.Message, "Country Standards", MessageBoxButton.OK,…
Kuntady Nithesh
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How to use WPF Background Worker

In my application I need to perform a series of initialization steps, these take 7-8 seconds to complete during which my UI becomes unresponsive. To resolve this I perform the initialization in a separate thread: public void Initialization() { …
Eamonn McEvoy
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Async/await vs BackgroundWorker

In the past few days I have tested the new features of .net 4.5 and c# 5. I like its new async/await features. Earlier I had used BackgroundWorker to handle longer processes in the background with responsive UI. My question is: after having these…
Tom
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BackgroundWorker vs background Thread

I have a stylistic question about the choice of background thread implementation I should use on a windows form app. Currently I have a BackgroundWorker on a form that has an infinite (while(true)) loop. In this loop I use WaitHandle.WaitAny to keep…
freddy smith
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Sending Arguments To Background Worker?

Let's say I want to sent an int parameter to a background worker, how can this be accomplished? private void worker_DoWork(object sender, DoWorkEventArgs e) { } I know when this is worker.RunWorkerAsync();, I don't understand how to define in…
sooprise
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How to wait for a BackgroundWorker to cancel?

Consider a hypothetical method of an object that does stuff for you: public class DoesStuff { BackgroundWorker _worker = new BackgroundWorker(); ... public void CancelDoingStuff() { _worker.CancelAsync(); //todo:…
Ian Boyd
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2 answers

Task parallel library replacement for BackgroundWorker?

Does the task parallel library have anything that would be considered a replacement or improvement over the BackgroundWorker class? I have a WinForms application with a wizard-style UI, and it does some long-running tasks. I want to be able to have…
Keith G
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How to use a BackgroundWorker?

I know it has 3 methods. In my program I have a method to send a message. It is often late and the program sometimes doesn't send the message at all in response to a button press. At times it is as late as 5 seconds from what I would expect and the…
angel
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How to stop BackgroundWorker correctly

I have a form with 2 comboboxes on it. And I want to fill combobox2.DataSource based on combobox1.Text and combobox2.Text (I assume that the user has completed input in combobox1 and is in the middle of inputting in combobox2). So I have an event…
StuffHappens
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How to stop BackgroundWorker on Form's Closing event?

I have a form that spawns a BackgroundWorker, that should update form's own textbox (on main thread), hence Invoke((Action) (...)); call. If in HandleClosingEvent I just do bgWorker.CancelAsync() then I get ObjectDisposedException on Invoke(...)…
THX-1138
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Unhandled exceptions in BackgroundWorker

I have a small WinForms app that utilizes a BackgroundWorker object to perform a long-running operation. The background operation throws occasional exceptions, typically when somebody has a file open that is being recreated. Regardless of whether…
Andy
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Unhandled exceptions in BackgroundWorker

My WinForms app uses a number of BackgroundWorker objects to retrieve information from a database. I'm using BackgroundWorker because it allows the UI to remain unblocked during long-running database queries and it simplifies the threading model for…
Ed Guiness
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How to make BackgroundWorker return an object

I need to make RunWorkerAsync() return a List. What is the process to be able to return an object from a background worker?
Clair Vengs
58
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6 answers

How to "kill" background worker completely?

I am writing a windows application that runs a sequence of digital IO actions repeatedly. This sequence of actions starts when the user click a "START" button, and it is done by a background worker in backgroundWorker1_DoWork(). However, there are…
Ken Hung
58
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4 answers

This BackgroundWorker is currently busy and cannot run multiple tasks concurrently

I get this error if I click a button that starts the backgroundworker twice. This BackgroundWorker is currently busy and cannot run multiple tasks concurrently How can I avoid this?
Jade M
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