Reading the expressions of assignments nested inside an If activity

Question

I have an If activity, with assignment activities in each of the Then and Else activities.  I need to read the expressions being used.  I can use WorkflowInspectionServices to get the activities, but how can I tell one from the other?  
What Im doing is de-serializing a workflow from a xaml file, creating the main activity, then trying to determine what the different parts of the If activity are.  Since the assignments are activities themselves, I can use a similar approach - getting
the child activities of the If activity, but then how do I tell which one belonged to the Then vs the Else ?

Answer 1

Well,  its not working.  Im still not sure how to get at the different parts of the assignment activities.  Below is the code Im using.
The collection 'lif' is a List<If> and as you can see, im trying to get at the different pieces of each assignment activity contained within the Then/Else.  What am I missing?  
//build collection that mimics the sequence of individual rules
foreach (If i in lif)
//Each If activity has a Then and Else, each are also activities
Activity ThenActivity = i.Then;
Activity ElseActivity = i.Else;
// TODO: TargetParameters could be different for If and Then
retval.Add(new RuleInfo()
Condition = i.Condition.Expression.ToString(),
ThenValue = ThenActivity != null ? ((Assign)ThenActivity).Value.Expression.Result.Expression.ToString() : "",
TargetParameter = ThenActivity != null ? ((Assign)ThenActivity).To.Expression.Result.Expression.ToString() : "",
ElseValue = ElseActivity != null ? ((Assign)ElseActivity).Value.Expression.Result.Expression.ToString() : ""