backgroundworker

In my windows forms applications I have a class that extends a backgroundworker, let's call it ExtendedBGW1.cs in my form class I declare it like a member variable so I have scope for the entire class like so: public partial class Main : Form { ExtendedBGW1 ebgw1; } Later on in the forms constructor I do this public Main() { InitializeComponent(); ebgw1 = new ExtendedBGW1(); InitializeBackgoundWorker(); } My InitializeBackgroundWoker() method looks like this private void InitializeBackgoundWorker() { ebgw1.DoWork += new DoWorkEventHandler(ebgw1.worker_DoWork); ebgw1.RunWorkerCompleted += new

I have a background worker which updates the GUI on a regular basis via ReportProgress. The update occurs at regular intervals, every 5 seconds for example, or it could be 20 seconds. In order to perform the update at set times I send the worker process to sleep for the duration and when it wakes it updates the GUI with new information. The worker supports cancellation, and outside of sleeping it cancels correctly. I want to be able to invoke the cancellation during the wait period, however sending the thread to sleep makes this impossible. I assume I'll have to invoke a loop and check for the

i am using the background worker to do an expensive operation: backgroundWorker1.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork); backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged); backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted); backgroundWorker1.RunWorkerAsync(inputs); At the end i have this: void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { Messagebox.Show("Done with expensive operation 1"}; } I now have another expensive

I want my background worker to add items to a list box, it appears to do so when debugging but the listbox doesn't show the values. I suspect this is something to do with adding items whilst inside the background worker thread, do I need to add these to an array and then populate the list box from the array during backgroundWorker1_RunWorkerCompleted ? Thanks for the help. You can use Invoke like this: private void AddToListBox(object oo) { Invoke(new MethodInvoker( delegate { listBox.Items.Add(oo); } )); } You can, but you must advise your Backgroundworker to report state, and send the input

Edit I suppose the proper way of forcing await to invoke the worker asynchronously is with a Task.Run, like this: await Task.Run(() => builder.Build(dlg.FileName, cts.Token, new Progress(ReportProgress))); Got some light from http://blogs.msdn.com/b/pfxteam/archive/2012/04/12/10293335.aspx . this should be easy but I'm new to async/await so bear with me. I am building a class library exposing an API with some long-running operations. In the past, I used a BackgroundWorker to deal with progress reporting and cancelation, like in this simplified code fragment: public void DoSomething(object