title: Is it possible to re-group the result of using a LINQ GroupBy()?
body: <p>If I have used LINQ's GroupBy() method to create a grouped enumeration, is it possible to regroup that result under another key system? That is, if I grouped all of the objects by property X for one part of the code, is it possible to subsequently group that collection by property Y of property X at a later point in the code?</p>