How to use "For Each" with a dictionary

I've just started playing with dictionaries.  I have been able to iterate through a list using the "For Each" construct, but I have not been able to do it with a library.  Any suggestions would be appreciated.

For Each x As myObj In listContact
   '...code to process each x
Next

Dim dictContact As New Dictionary(Of Int32, MyObj)
   '...Add lots of Keys and MyObjs to dictContact, then
For Each x As MyObj in dictContact
   '...code to process each x
Next

This attempt at using the "For Each" for the dictionary won't compile.  Thanks.