"Brian Simmons" <centraso@newsgroup.nospam> wrote in message
news:ekLEgwwTHHA.4276@TK2MSFTNGP02.phx.gbl...
> Hi All,
>
> I think I have a question that probably has an easy answer, but I can't
> manage to find it.
>
> I come from a Sybase PowerBuilder programming background, and pretty much
> all PB developers used the following technique:
> "Post"ing a method/event when opening a window, so that the window
> displays, is drawn, an hourglass displays, and then run any code that may
> take a while (i.e. a long query retrieval).
> As opposed to, putting the retrieval (or whatever) code in the Open
> event, which would show the user nothing, and give them the impression
> that "nothing" was happening.  Until the query is retrieved, then the
> window will be displayed.
>
> So, how does one accomplish this "technique" properly in
> C#/Winform/.NET2?
>
> I've currently got a winform and in the Load event I'm calling a
> webservice. This webservice can take awhile to return with the necessary
> data.  Thus my window isn't displayed until the WS returns data.  I would
> rather the window displays, shows an hourglass, then calls the web
> service, and the program waits until it returns.
>
> Any suggestions?
>
> Thanks,
> Brian
>

"Linda Liu [MSFT]" <v-l***@online.microsoft.com> wrote in message
news:rii5XV1THHA.3604@TK2MSFTNGHUB02.phx.gbl...
> Hi Brian,
>
> I agree with you that it's better to show the main window first, and then
> calls the web serive.
>
> When a program is going to execute some time-consuming work, it would be a
> pleasant user experience to show the progress of the underlying work,
> besides showing an hourglass cursor. .NET 2.0 has provided the
> BackgroundWorker class which makes this task easy.
>
> So I suggest that you use a BackgroundWorker component in your form and
> start the underlying work when the form is loaded. When the underlying
> work
> is being executed, you may show an hourglass cursor and disable some
> controls on your form if necessary.
>
> For more information on BackgroundWorker and how to use it, you may visit
> the following link.
>
> 'BackgroundWorker Class'
> http://msdn2.microsoft.com/en-us/library/system.componentmodel.backgroundwor
> ker.aspx
>
> Hope this helps.
> If you have any question, please feel free to let me know.
>
>
> Sincerely,
> Linda Liu
> Microsoft Online Community Support
>
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