Using an easy example:
I have a class Car , with subclass Mazda .
Mazda has a property: MazdaWarrentyDate
Using my Db Context, I go:
var collection = db.user.cars;
I then, loop through collectiong using: var c in collection
I use a conditional to check if the type of instance is a mazda and then cast it to a mazda. But the MazdaWarrentyDate is null!
Upon debugging, I looked at the POCO before casting it, and indeed this property is not present, even though it recognised it as a type Mazda.
Is this a limitation in Entity framework? If so, how can I get around this? Thank you!
var collection = db.user.cars.Where(t=> t is Mazda).OfType<Mazda>();
foreach (var car in collection ){
//TODO
}
The reason the associate object was null, was because I started by querying at user -> car etc. To fix it, I simply started by querying at cars, eg:
db.cars.where(c => c.user.id == myUserId);
Doing this caused the related poco's to be lazy loaded and this can all be iterated in one loop.
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