How to do LINQ to SQLite with Mono?

Elements Oxygene
6

Using the following code on Mono 2.10.8 I get an “Invalid Operation Exception” when the table is empty. When there’s data I get Result!: 2.
What am I missing?

namespace ConsoleLINQ;

interface

uses 
System.Data.Linq,
  Mono.Data.Sqlite,
  DbLinq.Data.Linq,
  DbLinq.Sqlite,
System.Linq;

type
ConsoleApp = class
public
class method Main(args: array of String);
end;
[System.Data.Linq.Mapping.TableAttribute]
MyTable = public class
public
    [System.Data.Linq.Mapping.Column()]
  property MyInteger: Integer;
end;


implementation

class method ConsoleApp.Main(args: array of String);
begin
var conn := new SqliteConnection('DbLinqProvider=Sqlite;' + 'Data Source=db.sqlite');
var db := new DataContext(conn);

var res := from n in db.GetTable() where n.MyInteger > 0 select n;

Console.WriteLine('Result!: ' + res.First().MyInteger.ToString())
end;

end.