[RESOLVED] VB 2010: Cross-thread problem with Progress Bar

[HunterTTP]

Alright so I finished my first program and I'm working on my second. I copied over a bunch of stuff and now the only problem I am having is this error with my progress bar.

"Cross-thread operation not valid: Control 'ProgressBar1' accessed from a thread other than the thread it was created on."

I've fixed this before, but I can't quite remember. Here is the code it is being used by-

Private Sub BackgroundWorker1_ProgressChanged(ByVal sender As Object, ByVal e As System.ComponentModel.ProgressChangedEventArgs) Handles BackgroundWorker1.ProgressChanged

        ProgressBar1.Value = Convert.ToInt32(100 * P / 2)

    End Sub

[AceInfinity]

Invoke the UI thread to access the progressbar properties.

ProgressBar1.Invoke(Sub() ProgressBar1.Value = Convert.ToInt32(100 * P / 2))

[HunterTTP]

Thanks! Although, I found the problem once I read back through my code. The report progress was set to the wrong progress change.

[AceInfinity]

The cross thread issue has more to do with threads trying to take action on threads that aren't their own.

[HunterTTP]

That really did help though, on a totally different part of my program xD Thanks.

[AceInfinity]

No problem, as long as you've got things figured out