static void Cleanup()
{
using (var context = new EFRecipesEntities())
{
context.Database.ExecuteSqlCommand("delete from chapter11.PatientVisit");
context.Database.ExecuteSqlCommand("delete from chapter11.Patient");
}
}
static void RunExample()
{
using (var context = new EFRecipesEntities())
{
var hotel = new Hotel {
Name = "Five Seasons Resort"
};
var v1 = new Visitor {
Name = "Alex Stevens"
};
var v2 = new Visitor {
Name = "Joan Hills"
};
var r1 = new Reservation
{
Cost = 79.99M,
Hotel = hotel,
ReservationDate = DateTime.Parse("19/2/2013"),
Visitor = v1
};
var r2 = new Reservation
{
Cost = 99.99M,
Hotel = hotel,
ReservationDate = DateTime.Parse("17/2/2013"),
Visitor = v2
};
var r3 = new Reservation
{
Cost = 109.99M,
Hotel = hotel,
ReservationDate = DateTime.Parse("18/2/2013"),
Visitor = v1
};
var r4 = new Reservation
{
Cost = 89.99M,
Hotel = hotel,
ReservationDate = DateTime.Parse("17/2/2013"),
Visitor = v2
};
context.Hotels.Add(hotel);
context.Visitors.Add(v1);
context.Visitors.Add(v2);
context.Reservations.Add(r1);
context.Reservations.Add(r2);
context.Reservations.Add(r3);
context.Reservations.Add(r4);
context.SaveChanges();
}
using (var context = new EFRecipesEntities())
{
Console.WriteLine("Using eSQL...");
var esql = @"Select value v from
EFRecipesModel.VisitorSummary(DATETIME'2013-02-16 00:00', 7) as v";
var objectContext = (context as IObjectContextAdapter).ObjectContext;
var visitors = objectContext.CreateQuery <DbDataRecord>(esql);
foreach (var visitor in visitors)
{
Console.WriteLine("{0}, Total Reservations: {1}, Revenue: {2:C}",
visitor["Name"], visitor["TotalReservations"],
visitor["BusinessEarned"]);
}
}
using (var context = new EFRecipesEntities())
{
Console.WriteLine();
Console.WriteLine("Using LINQ...");
var visitors = from v in
context.VisitorSummary(DateTime.Parse("16/2/2013"), 7)
select v;
try
{
foreach (var visitor in visitors)
{
Console.WriteLine("{0}, Total Reservations: {1}, Revenue: {2:C}",
visitor["Name"], visitor["TotalReservations"],
visitor["BusinessEarned"]);
}
}
catch (Exception ex)
{
Console.WriteLine("Call cannot be made to this function.");
}
Console.WriteLine("Press any key to close...");
Console.ReadLine();
}
}
