Generate json result based on two related entites - asp.net-mvc-3

Question

I have two related one to many entities
Race and Cars (on race contains a lot of cars)
I need to generate an json result to pass it to jQGrid, i thought may be it is possible to do that without creating new class witch would contain properties. I thought I can go like that:
var jsonData = new
{
total = totalPages,
page = page,
records = totalRecords,
rows = (from c in Races
select new
{
//c.Cars.Id.ToString(), - need iteration
cell = new string[] {
//c.Cars.Id.ToString(), - need iteration
c.Date.ToString(),
c.Type.ToString(),
c.Cars //But how i may loop all Cars colection here?
//c.Cars.Name - need iteration
//c.Cars.Speed - need iteration
}
}).ToArray()
};
But the Cars property represent collection. How may i iterate that inside collection initializer? Or should i better create class witch would contain all the properties i need?
Any ideas?
Lets say Car has properties Name Speed Id and Race has properties Date, Type
The data will be displayed like that:
Date | Type | Id | Name | Speed
02/03/2011 | A | 1 | MegaName1 | 130
02/03/2011 | A | 2 | MegaName2 | 112
02/03/2011 | A | 3 | MegaName3 | 132
03/05/2011 | B | 4 | MegaName2 | 112
03/05/2011 | B | 5 | MegaName4 | 33

Answer 1

Try the following:
var jsonData = new
{
total = totalPages,
page = page,
records = totalRecords,
rows =
(from race in races
from car in race.Cars
select new
{
cell = new string[]
{
race.Date.ToString(),
race.Type,
car.Id,
car.Name,
car.Speed.ToString()
}
}).ToArray()
};