Timers Help

Ok so if I do the:

Await Task.Delay(1000)

it will wait one second before doing the next set of stuff?

When I try this I get this error

http://ift.tt/1DWjM0q

If so, I want the progress bar to fill up over the time of that delay and then clear at the end, so the progress bar would fill up during that one second and then clear once the 1 second is reached.