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Editorial Team
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Asked: 2026-05-13T07:09:02+00:00

In the last question Display progress bar while doing some work in C#? ,

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In the last question Display progress bar while doing some work in C#?, people has recommend use of BackgroundWorker. I thought in BackgroundWorker DoWork method you can update the GUI directly, but why this function call need to be called using Invoke.

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1 Answer

  1. Editorial Team

    The RunWorkerCompleted callback is marshalled onto the UI thread; DoWork is not.

    You should use the ReportProgress method to update the UI during DoWork processing.

    See: How to: Run an Operation in the Background

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