Re: BackgroundWorker problems

I call ShowDialog() from the background thread on which the dialog was
created, so that's not the problem. Show() was a problem, but we don't
know why. If we were making an illegal call, we'd get an exception (at
least in .NET 2.0; I don't remember what used to happen), but it really
seems like something is blocking somewhere.
 
I'm not sure what needs to be TDDed here anyway. We don't need to verify
that BackgroundWorker works correctly. On Yahoo!'s TDD newsgroup, this
question comes up often, and I can summarize by saying that you very
rarely want to test the interaction of code on different threads. You
really want to test their different tasks separately. Well, if Ron's
background task does nothing but call ReportProgress(), there's really
nothing to test in the first place. 


________________________________

	From: [email protected]
[mailto:[email protected]] On Behalf Of Sean
Dockery
	Sent: Friday, November 16, 2007 11:24 AM
	To: [email protected]
	Subject: Re: [Nunit-users] BackgroundWorker problems
	
	
	Quick question from someone new to .NET: Aren't you forbidden
from calling into the GUI from a thread other than the GUI event
processing thread?  If that is the case, shouldn't you be looking to
doing all of your GUI-related code by posting windows messages (or some
similar vehicle equivalent to what you did in the WIN32 days) to the
main GUI event processing thread?  There are probably a number of
alternative approaches to doing this, such as having your
BackgroundWorker thread's delegate report progress and completion status
through non-GUI properties that are read by a Timer component in the
form, for example.
	 
	Am I way off in suggesting this type of approach?
	 
	Kindest regards,

________________________________

	From: [email protected]
[mailto:[email protected]] On Behalf Of Nassar,
Anthony
	Sent: November 16, 2007 7:53 AM
	To: Ian Wood; Lisle, Ron; [email protected]
	Subject: Re: [Nunit-users] BackgroundWorker problems
	
	
	Check out the code I just posted: I had to create the form on a
separate thread, and call ShowDialog(). Even so, neither the form nor
the BackgroundWorker is ever disposed! I can't figure it out.

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