private static void TimerTick(object sender, EventArgs e)
{
foreach (var rentedCar in rentedCars)
{
if (rentedCar.Item2 < DateTime.Now)
{
var conn = new DBConnectionString();
var car = conn.Автомобиль.FirstOrDefault(x => x.id == rentedCar.Item1);
if (car != null)
{
car.Доступность = true;
}
rentedCars.Remove(rentedCar);
conn.SaveChangesAsync();
}
}
}