What code is better to delay main thread while working thread is doing its work

Question

What code is better to delay (wait) main thread while working thread doing its work?

1)

int ticks = System.Environment.TickCount;
while (System.Environment.TickCount - ticks < milliseconds);

2)

Thread.Sleep(milliseconds);

3)

Your variant.

Thank you.

ADDED

SOLUTION:

Wait Timeouts

Answer 1

Neither of those things are good. Either one will cause the UI to become unresponsive while the worker thread is doing its work.

Instead you should schedule work items to run on the worker thread, then send a message back to the UI thread when the work has completed.

One way of running things on the UI thread from the worker thread is:

Deployment.Current.Dispatcher.BeginInvoke(() =>
{
   // Your UI thread code to run here.
}

See also.

You can also use background workers.

Answer 2

Take a look at this: http://msdn.microsoft.com/en-us/library/system.componentmodel.backgroundworker.onrunworkercompleted.aspx

This should do everything you need, assuming you are using the background worker class. As stated in another answer, the solutions you provided will really bog down your program, defeating the point of having another thread.