//populate drop down with seat rows
private void PopulateSeatRows()
{
using (AirlineEntities context = new AirlineEntities())
{
var seatRows = context.Seats.OrderBy(s => s.SeatRow).ThenBy(s => s.SeatColumn).Select(s => s.SeatRow).Distinct().ToList();
foreach (var row in seatRows)
{
cboSeatRow.Items.Add(row);
}
}
}
//Display the seats in the list box
private void PopulateAirplane()
{
//clear previous listbox and list of Seats
lstOutput.Items.Clear();
seatList.Clear();
//Select * seats from Seats table. Read results and create a Seat object with
//ID, Row, Column and IsTaken property from the reader
//Add the Seat object to the list
//Loop through the list and display the content in the list box
using (AirlineEntities context = new AirlineEntities())
{
var seats = context.Seats.OrderBy(s => s.SeatRow).ThenBy(s => s.SeatColumn).ToList();
foreach (var seat in seats)
{
var s = new Seat
{
SeatID = seat.SeatID,
SeatRow = seat.SeatRow,
SeatColumn = seat.SeatColumn,
IsTaken = seat.IsTaken
};
seatList.Add(s);
}
var msg = "";
var counter = 0;
for (int i = 0; i < seatList.Count; i++)
{
counter++;
var seat = seatList[i];
bool available = seatList[i].IsSeatTaken(seat.SeatID);
if (available == true)
{
msg += " " + seatList[i].SeatRow + seatList[i].SeatColumn + " ";
}
else
{
msg += " XX ";
}
if (counter % 4 == 0)
{
lstOutput.Items.Add(msg);
msg = "";
}
else if (counter % 2 == 0)
{
msg += " ";
}
}
}
}
//check if the plane is full (used to place passenger on waiting list)
public bool IsPlaneFull()
{
using (AirlineEntities context = new AirlineEntities())
{
var isFull = (from s in context.Seats
where s.IsTaken == false
select s).Count();
if (isFull > 0)
{
return(false);
}
}
return(true);
}
private void frmReservations_Load(object sender, EventArgs e)
{
using (AirlineEntities context = new AirlineEntities())
{
context.Passengers.ToList();
context.Seats.ToList();
this.passengerBindingSource.DataSource = context.Passengers.Local.ToBindingList();
this.seatBindingSource.DataSource = context.Seats.Local.ToBindingList();
PopulateAirplane();
PopulateSeatRows();
}
}
//check if seat is already taken
public bool IsSeatTaken(int SeatID)
{
using (AirlineEntities context = new AirlineEntities())
{
//var seat = context.Database.ExecuteSqlCommand("SELECT * FROM seats WHERE SeatRow = @SeatRow and SeatColumn = @SeatColumn" +
// "AND IsTaken = false");
var seat = context.Seats.Find(SeatID);
if (seat.IsTaken == true)
{
return(false);
}
else
{
return(true);
}
}
}
