title: How to use WF4 activity to wait for an event?
body: <p>I found that you can use Pick activity and this activity will contain a few PickBranches, each of which contains a Trigger and an Action. How do I tie the Trigger activity to any .NET event? for example, <a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.timer.tick.aspx" rel="nofollow">Timer.Tick event</a>, Key pressed event, or perhaps my own event?</p>