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Easy Multithreaded Programming Using BackgroundWorker

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Here's a quote from Chapter 6: Using Multiple Threads of the Smart Client Architecture and Design Guide:

"To maximize the responsiveness of your smart client applications, you need to carefully consider how and when to use multiple threads. Threads can significantly improve the usability and performance of your application, but they require very careful consideration when you determine how they will interact with the user interface."

.NET Framework 2.0 and the BackgroundWorker component to the rescue!  Marc Schweigert, Federal Developer Evangelist, shows you how easy it is to build a responsive multithreaded Smart Client application with Windows Forms 2.0 & the BackgroundWorker component.

Resources:

Federal Developer Blog:
http://blogs.msdn.com/federaldev/

BackgroundWorker Component Overview:
http://msdn2.microsoft.com/en-us/library/8xs8549b.aspx

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  • JohnAskewJohnAskew 9 girl in pink sweater
    Succint, valuable, and well presented.

    Some may say that Channel 9 for them is all about "getting to know personalities at Microsoft". Well, I'll trade all of that for training.

    This content is what Channel 9 offers me, and I thank you for it.

    [6][A]
  • tsilbSlackmasterK This Space ​Intentional​ly Left Blank
    Very informative. This solved exactly the problem I was having, as I had never created a multithreaded app.  I appreciate the verbosity you went into to describe in detail how to implement and return event functionality as well.  Thanks!
  • Handy stuff.

    Although I know it would be easy to do, it would have been nice had the progress bar been used to show database load progress as well.
  • I know it's been a while since I did this screencast, but I have posted the code here.  I am glad this helped some folks.  Thanks for the feedback.

    -Marc
  • Luciano Evaristo GuercheguercheLE guerchele
    What I found interesting is that in the following statement there is no break instruction and the background worker breaks it whatsoever.

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        for (int i = 1; i <= 10; i++)
        {
            if (backgroundWorker1.CancellationPending)
            {
                e.Cancel = true;
            }
            else
            {
                backgroundWorker1.ReportProgress(i * 10);
                Thread.Sleep(1000);
            }
        }
    }
  • testes
    Hi
    I noticed that this video is no longer working on this site.  Is there anyway you can get this video to be functional again?
    thanks

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