VS2005 BETA2 error

[Filik]

Hi,
i've come across a very strange error in 2005 BETA2, it shows up when i try to access the visible property of a progress bar from a button, it says:
"Progressbar1 was accsesed from a thread other then it was created"
Is there anyway to go around this error?
thx

[jmcilhinney]

That's not a strange error at all, and it means exactly what it says. You weren't supposed to make cross thread method calls in VS.NET 2003 but that was not enforced. In VS 2005 it is enforced, although I have a feeling it is only while debugging and not in release, although that should be a good enough indication that it is a bad idea. The only members of the Control and derived classes that are thread-safe are Invoke, BeginInvoke, EndInvoke and CreateGraphics, so these are the only members you should access between threads. if you want to access other members, you should call Invoke or BeginInvoke and use a delegate. See the following thread for an example, and I recommend some reading on the subject in the help or on MSDN.

http://www.vbforums.com/showthread.p...light=delegate