c# - How do I "Thread.Join" a BackgroundWorker? -

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Say I'm displaying a form to the user, and using backgroundwalker to do some work behind some background scenes I am doing

By the time the user clicks ok, I can not work until the BackgroundWorker is completed. If this is not okay when the user clicks ok, then I want to show the waiter till it continues till then. And then release.

What is the best way to implement it?

I know I could use a simple old thread, and then thread it. Join, but I like the backgrounder

Can it be done well? is?

You can use this code instead BW 

  Var reset event = new manual rsset (incorrect); ThreadPool.QueueUserWorkItem (state => {Thread.Sleep (5000); // LongRunning function, async call resetEvent.Set ();});
Reset event when user clicks Waiting (); // Blocked calls,

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