public class DynamicQuery<T> : System.Dynamic.DynamicObject where T : class, IDbObject
{
public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result)
    {
        var ss = binder.Name.Split(new[] { "And" }, StringSplitOptions.None);
if (ss.Length != args.Length)
        {
throw new ApplicationException("The args count doesn't match method call " + binder.Name + "");
        }
        Condition c = null;
for (int i = 0; i < ss.Length; i++)
        {
            c &= CK.Column[ss[i]] == args[i];
        }
        result = DbEntry.Context.GetObject<T>(c);
return true;
    }
}

public abstract class User : DbObjectModel<User>
{
public abstract string Name { get; set; }
public abstract int Age { get; set; }

public abstract User Init(string name, int age);

public static dynamic FindBy
    {
get { return new DynamicQuery<User>(); }
    }
}

class Program
{
static void Main(string[] args)
    {
        DbEntry.Context.DropAndCreate(typeof(User));
        User.New.Init("tom", 18).Save();
        User.New.Init("jerry", 99).Save();
        User.New.Init("mike", 34).Save();

        var u = User.FindBy.Name("tom");
        Show(u);
        u = User.FindBy.Age(99);
        Show(u);
        u = User.FindBy.NameAndAge("jerry", 27);
        Show(u);
        u = User.FindBy.NameAndAge("mike", 34);
        Show(u);

        Console.WriteLine("The End");
        Console.ReadLine();
    }

static void Show(dynamic u)
    {
if (u == null)
        {
            Console.WriteLine("<NULL>");
        }
else
        {
            Console.WriteLine("Item: {0},{1},{2}", u.Id, u.Name, u.Age);
        }
        Console.WriteLine("-------------------------------------");
    }
}