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Question:

[HTTP]how does the progressbar show progress when downloading if the program isn't responding because it is downloading?

Apr 25 '15 at 03:52

as the title says,I tried using a backgroundworker but it doesn't update the PercentDone.

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Answer

Is this VB6? A progress bar control usually updates on its own. You can try calling DoEvents() to handle UI events from within the event handler. See this: http://www.cknotes.com/windows-application-user-interface-freezes/