//Function to display all Guest details
public static List <Guest> DisplayGuest()
{
List <Guest> guestList = null;
try
{
guestList = GuestOperations.DisplayGuestFromFile();
//Check guest list is empty or not, if it is then raise exception
if (guestList == null)
{
throw new GuestPhoneBookException("Guest List is Empty!");
}
}
catch (GuestPhoneBookException p)
{
throw;
}
catch (SystemException e)
{
Console.WriteLine(e.Message);
}
return(guestList);
}
public static List <Guest> DisplayFromFile()
{
List <Guest> guestlist = GuestOperations.DisplayGuestFromFile();
return(guestlist);
}
