private void Price_TextChanged(object sender, TextChangedEventArgs e)
{
if (TotalPrice.Validate() && PaidSum.Validate())
{
decimal remainingSum = TotalPrice.DecimalValue - PaidSum.DecimalValue;
RemainingSum.DecimalBox.Text = $"{remainingSum:f2}";
}
Save.IsEnabled = IsSaveEnabled();
}
public bool IsSaveEnabled()
{
bool validRoom = Room.SelectedIndex > 0;
bool validGuest = GuestName.Validate();
bool validGuests = GuestsInRoom.Validate();
bool validNights = Nights.Validate();
bool validTotal = TotalPrice.Validate();
bool validPaid = PaidSum.Validate();
bool validRemaining = RemainingSum.Validate();
return(validRoom && validGuest && validGuests && validNights && validTotal && validPaid && validRemaining);
}