Progressbar won't update with backgroundworker?

Seems strange the you're able to assign a value to the a UI control from another thread without getting any exception. Or that is, may be, a real issue. Like a first thing I would do, if the code of ProgressChanged is inside (say) WindowsForm class, write like this.

The background worker is dorking around on a new thread, therefore, calling anything back to the original form and its controls (or original thread) will require some delegation to accomplish what you desire. I have several code examples that I can share but they would take up far too much space here on this site. As a quick assistance, try some of this information from this site.

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