Task parallel library replacement for BackgroundWorker?

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The Task class is an improvement over the BackgroundWorker; it naturally supports nesting (parent/child tasks), uses the new cancellation API, task continuations, etc.

I have an example on my blog, showing the old BackgroundWorker way of doing things and the new Task way of doing things. I do have a small helper class for tasks that need to report progress, because I find the syntax rather awkward. The example covers result values, error conditions, cancellation, and progress reporting.

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