I have a very basic controller, which does a Linq to Entities query and I want to be able to project the results onto a viewmodel using AutoMapper - however I'm getting the error:
cannot convert from 'System.Collections.Generic.List<AnonymousType#1>' to 'System.Collections.Generic.IList<tb.Models.Tour>':
Controller:
var tours2 = (from t in db.Tours
join d in db.TourDates on t.TourId equals d.TourId
join c in db.TourCategories on t.TourCategoryId equals c.TourCategoryId
where d.Date == dte && t.TourCategoryId == id
select new
{
Id = t.TourId,
TourName = t.TourName,
TourCategoryId = t.TourCategoryId,
Bookings = db.Bookings.Where(b => d.TourDateId == b.TourDateId).Count()
}).ToList();
Mapper.CreateMap<IList<Tour>, IList<ToursAvail2VM>>();
IList<ToursAvail2VM> toursvm = Mapper.Map<IList<Tour>, IList<ToursAvail2VM>>(tours2);
ViewModel:
public class ToursAvail2VM
{
public int Id { get; set; }
public int TourCategoryId { get; set; }
public string TourName { get; set; }
public int Bookings { get; set; }
}
How do I get the list of results projected onto my toursvm class?
Thanks for any advice, Mark
Your linq query is returning an anonymous type, rather than Tour. You need to explicitly specify the class you would like returned, or AutoMapper can't handle it.
However, since you are using Linq to Entities, you can't specify ToursAvail2VM directly. You can do something like selecting into the anonymous type and then immediately selecting into ToursAvail2VM like the following:
IList<ToursAvail2VM> toursvm =
(from vm in
(from t in db.Tours
join d in db.TourDates on t.TourId equals d.TourId
join c in db.TourCategories on t.TourCategoryId equals c.TourCategoryId
where d.Date == dte && t.TourCategoryId == id
select new
{
Id = t.TourId,
TourName = t.TourName,
TourCategoryId = t.TourCategoryId,
Bookings = db.Bookings.Where(b => d.TourDateId == b.TourDateId).Count()
}).ToList()
select new ToursAvail2VM
{
Id = vm.Id,
TourName = vm.TourName,
TourCategoryId = vm.TourCategoryId,
Bookings = vm.Bookings
}).ToList();
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