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Running progress indicator in different thread to UI threadHi All
I have a vb.net 2008 app and I want to display a circular marquee progress control on top of the main controls whilst the app is connecting to an SQL server database remotely via a vpn The circular control needs a value (integer) sent to it every 200ms from a timer Is there a way to run the timer and update the control from a backgroundworker so its is responsive Regards Steve Hi Steve,
If we are using a BackgroundWorker. We can perform long actions in its DoWork event handler. In the event handler, we can set the integer value by calling worker.ReportProgress() function. After that, in the ProgressChanged event handle, we can retrieve the value from e.ProgressPercentage. The ProgressChanged event handle is executed in the main thread. So that we can update the Controls directly. You can have a look at the following nice article, http://vbnotebookfor.net/2007/09/24/how-to-update-controls-using-backgroundw orker-in-vbnet/ Please let me know if you have any future questions on this. Have a nice day! Best regards, Ji Zhou Microsoft Newsgroup Support Team Hi Ji
I tried the code example but it doesn't work in my situation When connecting to a remote database the progress indicator appears OK but there is no action from it when I am trying a test connection to the Remote sql server db and the connection is down In other words, the code in the UI is attempting to connect to sql server until it times out, which prevents the progress control from updating via Reportprogress event which doesn't fire until the sqlconnection has timed out I think I need to put the sqlconnection on a different thread and just run the progress control from a timer in the UI thread I have tried Application.DoEvents at applicable places but no difference Regards Steve Show quoteHide quote "Colbert Zhou [MSFT]" <colbe***@online.microsoft.com> wrote in message news:BgPYjhHAKHA.5260@TK2MSFTNGHUB02.phx.gbl... > Hi Steve, > > If we are using a BackgroundWorker. We can perform long actions in its > DoWork event handler. In the event handler, we can set the integer value > by > calling worker.ReportProgress() function. After that, in the > ProgressChanged event handle, we can retrieve the value from > e.ProgressPercentage. The ProgressChanged event handle is executed in the > main thread. So that we can update the Controls directly. > > You can have a look at the following nice article, > http://vbnotebookfor.net/2007/09/24/how-to-update-controls-using-backgroundw > orker-in-vbnet/ > > Please let me know if you have any future questions on this. Have a nice > day! > > Best regards, > Ji Zhou > Microsoft Newsgroup Support Team >  
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