One of my entities Create page needs to have a list of other entities, in this case the Timetable create view needs a list of Station entities. To achieve this I created my own ViewModel:
public class TimetablesCreateViewModel
{
public Timetable Timetable { get; set; }
public IEnumerable<Station> Stations { get; set; }
}
I then changed my Create methods in the TimetablesController class to be this:
public ActionResult Create()
{
TimetablesCreateViewModel model = new TimetablesCreateViewModel
{
Timetable = new Timetable(),
Stations = db.Stations.ToList()
};
return View();
}
I then modified my Create.cshtml page to use @model MyApp.ViewModels.TimetablesCreateViewModel, and I'm attempting to loop through Stations like this:
@foreach (var s in Model.Stations)
{
<p>@s.Name</p>
}
When I load the /Timetables/Create page, I get a NullReferenceException:
An exception of type 'System.NullReferenceException' occurred in App_Web_lqnuresu.dll but was not handled in user code
Additional information: Object reference not set to an instance of an object.
The only thing I thought would be causing this is if no stations were populated into Model.Stations, but that's not the case, it's successfully retrieving all the stations in the database.
