bulk insert with linq-to-sql

I have a query that looks like this:

using (MyDC TheDC = new MyDC())
{
   foreach (MyObject TheObject in TheListOfMyObjects)
   {
      DBTable TheTable = new DBTable();

      TheTable.Prop1 = TheObject.Prop1;
      .....
      TheDC.DBTables.InsertOnSubmit(TheTable);

   }
   TheDC.SubmitChanges();
}

This query basically inserts a list into the database using linq-to-sql. Now I've read online that L2S does NOT support bulk operations. Does my query work by inserting each element at a time or all of them in one write?

Thanks for the clarification.