private static void InsertDet(mydbsqlDataContext db)
{
Table<det> tb = db.GetTable<det>();
det dt = new det();
Console.WriteLine("Enter your first Name");
dt.fname = Console.ReadLine();
Console.WriteLine("Enter your last Name");
dt.lname = Console.ReadLine();
Console.WriteLine("Enter your middle Name");
dt.mname = Console.ReadLine();
db.dets.InsertOnSubmit(dt);
db.SubmitChanges();
}
