/// <summary>
/// Create a transition between the given activity instances for the provided exit point
/// </summary>
public static void AddTransition(Workflow wf, WfActivity from, WfActivity to, ExitPoint exitPoint)
{
// remove any existing
var toRemove = from.ForwardTransitions.FirstOrDefault(t => t.FromExitPoint.Id == exitPoint.Id);
if (toRemove != null)
{
from.ForwardTransitions.Remove(toRemove);
var asTerm = toRemove.As <Termination>();
if (asTerm != null)
{
wf.Terminations.Remove(asTerm);
}
var asTrans = toRemove.As <Transition>();
if (asTrans != null)
{
wf.Transitions.Remove(asTrans);
}
toRemove.Delete();
}
var trans = new Transition()
{
Name = exitPoint.Name, FromActivity = @from, ToActivity = to, FromExitPoint = exitPoint
};
from.ForwardTransitions.Add(trans.As <TransitionStart>());
wf.Transitions.Add(trans);
}
