public T?GetById <T>(string key)
where T : class
{
var def = Activator.CreateInstance(typeof(T));
return(def switch
{
Ticket _ => (Tickets.FirstOrDefault(x => x.Id == key) as T),
Day _ => (Days.FirstOrDefault(x => x.Id == key) as T),
Hall _ => (Halls.FirstOrDefault(x => x.Id == key) as T),
_ => null
});
private void yesBTN_Click(object sender, EventArgs e)
{
Validation();
if (errorTB.Text == string.Empty)
{
Rent.Customer = Customers.FirstOrDefault(c => c.FullName == (string)custCB.SelectedItem);
Rent.CustomerID = Rent.Customer.ID;
Rent.Hall = Halls.FirstOrDefault(h => h.Name == (string)hallCB.SelectedItem);
Rent.HallID = Rent.Hall.ID;
Rent.People = Convert.ToInt32(peopleNUM.Value);
Rent.Hours = Convert.ToInt32(durationNUM.Value);
Rent.TimeStart = datestartDTP.Value.Date;
Rent.TimeStart = Rent.TimeStart.AddHours(Convert.ToInt32(timestartNUM.Value));
Rent.Price = Rent.Hall.Price * Rent.Hours;
Rent.Customer.CountVisits++;
Rent.Customer.MoneySpent += Rent.Price;
DialogResult = DialogResult.Yes;
}
}
private void hallCB_SelectedIndexChanged(object sender, EventArgs e)
{
Hall hall = Halls.FirstOrDefault(h => h.Name == (string)hallCB.SelectedItem);
peopleNUM.Maximum = hall.Capacity;
}