linq to sql navigation properties simple example

Question

For this kind of schema:

mainTable(Id,Name) //Id is primary key

secondryTable(mainTableId,RegDate,Age) // mainTableId is foreign key

Can anyone give me a example of Linq to Sql using navigation properites.

With join I am selecting as:

from mainT in db.mainTable
join secT in db.secondryTable on mainT.Id equals secT.mainTableId
select new { mainT.Name, secT.RegDate, secTable.Age}

Answer 1

I found a solution on my own :) The query would be:

FROM mainT in db.mainTable
SELECT new
    {
      mainT.Name,
      regDate = mainT.secT.Where(//some condition),
      age = mainT.secT.Where(//some condition)
    }

The above query is valid only if the Primary key/Foreign key relationships are defined properly in database.