LINQによるデータベース・アクセスとO/Rマッピングusing System; using System.Linq; using System.Collections.Generic; namespace ConsoleApplication1 { class Orders { public int OrderID; public int EmployeeID; public DateTime OrderDate; public string ShipCountry; public Orders(int id, int emp, DateTime date, string ship) { this.OrderID = id; this.EmployeeID = emp; this.OrderDate = date; this.ShipCountry = ship; } } class Program { static void Main(s
