When creating a query like so:

public class MongoContext
{
public IQueryable<SomeObject> Objects
{
get

{ return collection.Linq(); }

}
}

and calling it with the following:

var objectsThatStartWithA = mongoContext.Objects.Where(o => o.Name.StartsWith("A"));

Or:

var objectsThatStartWithA = mongoContext.Objects.Where(o => o.Name.Contains("A"));

You get the correct instances from Mongo but all properties are set to null.

I would guess the best way to implement these would be to use regular expressions although I wasn't able to get these working correctly:

db.ObjectsDb.Find(

{ Name: /"A"*/ }

)
And
db.ObjectsDb.Find(

{ Name: /*"A"*/ }

)