ArrayIndex is not supported in LINQ to Entities - linq

Question

// update information from this reponse to database
public bool UpdatePassengerInformation(GetResponse response)
{
try
{
using (MyEntities context = new MyEntities())
{
var masterID = (from Id in context.BookMaster where Id.BookingId == response.BookingId select Id.MasterId).First();
if (masterID != null)
{
for (int i = 0; i < response.Book.Length; i++)
{
var passenger_info = from passenger in context.BookPassenger
where passenger.BookID == masterID &&
assenger.FirstName == response.Book[i].FirstName && passenger.LastName == response.Book[i].LastName select passenger;
// in below loop i got exception "The LINQ expression node type 'ArrayIndex' is not supported in LINQ to Entities."
foreach (BookPassenger book_passenger in passenger_info)
{
book_passenger.TicketId = response.Book[i].TicketId;
book_passenger.TicketNumber = response.Book[i].TicketNumber;
}
}
context.SaveChanges();
}
}
return true;
}
catch (Exception ex)
{
throw ex;
}
}

Answer 1

So don't use it in query, just assign a new variable and use this one.
for (int i = 0; i < response.Book.Length; i++)
{
var responseBook = response.Book[i];
var passenger_info = from passenger in context.BookPassenger
where passenger.BookID == masterID &&
assenger.FirstName == responseBook.FirstName && passenger.LastName == responseBook.LastName select passenger;
foreach (BookPassenger book_passenger in passenger_info)
{
book_passenger.TicketId = responseBook.TicketId;
book_passenger.TicketNumber = responseBook.TicketNumber;
}
}