How to retrieve a subset of fields using the C# MongoDB driver? -

i've searched world on , can't seem find answer this.

how do in c#:

// retrieve ssn field documents last_name == 'smith': db.users.find({last_name: 'smith'}, {'ssn': 1}); 

thanks!

note can use (type/refactoring)-safe version:

userscollection.findallas<user>()                .setfields(fields<user>.include(user => user.firstname,                                                user => user.lastname)                                       .exclude(user => user.ssn)                .toarray();