Handle an event raised from background thread?

You've got to be on the UI thread to update UI objects. You can use the window's Dispatcher to execute code there.

BackgroundWorker explicitly supports marshaling to the UI thread. You have to use it though, call its ReportProgress() method. While optimized for reporting progress, you don't have to use it for that.

There's an overload that accepts an object, you can pass anything you want. The event handler gets it as the e. UserState value.

From there, you could use that object directly or use it to re-raise another set of events.

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