Provides an IProgress`1 that invokes callbacks for each reported progress value.
See Also: Progress<T> Members
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Any handler provided to the constructor or event handlers registered with the Progress`1.ProgressChanged event are invoked through a System.Threading.SynchronizationContext instance captured when the instance is constructed. If there is no current System.Threading.SynchronizationContext at the time of construction, the callbacks will be invoked on the System.Threading.ThreadPool.
For more information and a code example, see the article tp://go.microsoft.com/fwlink/p/?LinkId=267243 in the .NET Framework blog.