Orders a collection of elements by the specified property tree and returns a new
collection in that order.
You can sort by multiple keys, for example you can sort by LastName and then by
FirstName at once. Each key to sort by is separated by a comma (
character. Each sorted property can change the default order from ascending (default)
to descending by appending a space and
desc to the property name.
For example, if you specify the order by property of
FirstName desc then
the collection will be sorted by
FirstName and the results will be
returned in descending order.