Enumerates sites in the AudienceSiteCollection class.
Assembly: Microsoft.Office.Server.UserProfiles (in Microsoft.Office.Server.UserProfiles.dll)
An enumerator remains valid as long as the collection remains unchanged. If changes are made to the collection, such as adding, modifying, or deleting elements, the enumerator is irrecoverably invalidated, and the next call to MoveNext or Reset throws an exception. If the collection is modified between MoveNext and Current, Current returns the element that it is set to, even if the enumerator is already invalidated.