public static Cur_booking_Singleton Instance()
{
if (instance == null)
{
instance = new Cur_booking_Singleton();
return(instance);
}
else
{
return(instance);
}
}
public static Cur_booking_Singleton Instance(booking_class book)
{
if (instance == null)
{
instance = new Cur_booking_Singleton();
instance.book = book;
return(instance);
}
else
{
instance.book = book;
return(instance);
}
}
public booking_class Select_booking(int booking_ref, int cust_ref)
//Method to select the booking, since each booking has a customer associated with it the customer reference must also be used
{
Cur_customer_Singleton cur_cust = Cur_customer_Singleton.Instance();
sql = "SELECT * FROM booking WHERE booking_ref=" + booking_ref + " AND cust_ref=" + cust_ref + ";"; //Query to find the correct booking given the correct customer reference
cmd.CommandText = sql;
sdr = cmd.ExecuteReader();
bool bookExists = false;
booking_class book = new booking_class();
while (sdr.Read()) //while the data reader is reading through the database
{
if (sdr.GetString(0) == booking_ref.ToString())
/*
* This if statement will ensure that the booking reference in the database will be equal to the booking reference in the c#
* The booking class will have the data from the database saved to the corresponding variable in the booking_class
* Ref = first column of the database (i.e the booking reference) etc.
*/
{
bookExists = true;
book.Ref = Int32.Parse(sdr.GetString(0));
book.Arrivaldate = sdr.GetString(1);
book.DepDate = sdr.GetString(2);
book.Num_of_guests = sdr.GetString(3);
}
}
sdr.Close(); //data reader is no longer in use, therfore close it
if (bookExists == false)
//Error checking ensuring that the booking reference exists.
{
MessageBox.Show("Booking does not exist given the selected reference number.");
}
else
{
Cur_booking_Singleton cur_booking = Cur_booking_Singleton.Instance(book);
Booking bookingWin = new Booking(); //creating a new booking window
bookingWin.Show(); //open the booking window
bookingWin.txtBox_booking_ref.Text = book.Ref.ToString(); //set the text box value, booking ref, to the booking reference
bookingWin.datepicker_arrival.Text = book.Arrivaldate; //The arrival date is already a string and therefore does not need to be converted into a string
bookingWin.datepicker_dep.Text = book.DepDate;
bookingWin.txtBox_num_of_guests.Text = book.Num_of_guests;
}
return(book);
}
public void load_guests(int booking_ref) //NEED TO FIND A WAY TO CHECK IF THERE ARE ANY GUESTS EXISTING
/*
* This view method will be slightly different as it will need to load multiple different text boxes from multiple different rows
* in the database, within the same method. In order to achieve this a list will be used to iterate through all the four possible guests
*/
{
Cur_booking_Singleton curbooking = Cur_booking_Singleton.Instance(); //create a new instance of booking, as only one should be used at one time
sql = "SELECT * FROM guest WHERE booking_ref=" + booking_ref + ";"; //SELECT statement tha searches for the guests with the correct booking reference
cmd.CommandText = sql;
sdr = cmd.ExecuteReader();
List <guest> guestList = new List <guest>(); //creation of the list
while (sdr.Read())
{
if (sdr.GetString(5) == booking_ref.ToString()) //if the value of the 5th column in the database table is equal to the booking ref then
/*
* Same as previous reads however this time the identifier is the foreign key booking_reference as there may be multiple guests that need to be loaded in
*/
{
guest guest = new guest();
guest.Pass_num = sdr.GetString(0);
guest.LastName = sdr.GetString(1);
guest.Firstname = sdr.GetString(2);
guest.DoB = sdr.GetString(3);
guest.Dietreq = sdr.GetString(4);
guest.Booking_ref = booking_ref;
guestList.Add(guest); //adding all the values from the previous lines into the list, naming each group of values "guest"
}
}
sdr.Close();
Guests guestsWin = new Guests(); //creating a new guest window
guestsWin.txtBox_booking_ref.Text = booking_ref.ToString(); //inserting the booking reference into the booking refernce text box in the guest window
for (int i = 0; i < guestList.Count(); i++)
/*
* This for loop is used to iterate through the possible data that can be loaded into the guest window
* It will only be the size of the count of the guest list. Therefore the data wont be loaded in if the data for the guest does not exist.
*/
{
if (i == 0)
//for the first item in the list set the follwoing text boxes to the values in the list
{
guestsWin.txtBox_g1_pass_num.Text = guestList[i].Pass_num; //i.e set the passs number text box to be equal to the passpot number of guest 1
guestsWin.txtBox_g1_last.Text = guestList[i].LastName;
guestsWin.txtBox_g1_first.Text = guestList[i].Firstname;
guestsWin.datepicker_g1_DoB.Text = guestList[i].DoB;
guestsWin.txtBox_g1_diet_req.Text = guestList[i].DoB;
}
if (i == 1)
{
guestsWin.txtBox_g2_pass_num.Text = guestList[i].Pass_num;
guestsWin.txtBox_g2_last.Text = guestList[i].LastName;
guestsWin.txtBox_g2_first.Text = guestList[i].Firstname;
guestsWin.datepicker_g2_DoB.Text = guestList[i].DoB;
guestsWin.txtBox_g2_diet_req.Text = guestList[i].DoB;
}
if (i == 2)
{
guestsWin.txtBox_g3_pass_num.Text = guestList[i].Pass_num;
guestsWin.txtBox_g3_last.Text = guestList[i].LastName;
guestsWin.txtBox_g3_first.Text = guestList[i].Firstname;
guestsWin.datepicker_g3_DoB.Text = guestList[i].DoB;
guestsWin.txtBox_g3_diet_req.Text = guestList[i].DoB;
}
if (i == 3)
{
guestsWin.txtBox_g4_pass_num.Text = guestList[i].Pass_num;
guestsWin.txtBox_g4_last.Text = guestList[i].LastName;
guestsWin.txtBox_g4_first.Text = guestList[i].Firstname;
guestsWin.datepicker_g4_DoB.Text = guestList[i].DoB;
guestsWin.txtBox_g4_diet_req.Text = guestList[i].DoB;
}
}
sdr.Close();
}