Map null using ValueInjecter

Question

How do I map a null to an object using valueinjecter? It throws an error when I do this.

Do I need to use something else other than InjectFrom()?

more info

I have a repository that returns an object domain. I then want to map this domain to a viewmodel. The repository will return null if the object doesn't exist. I cannot map a null object to the viewmodel. How do I accomplish this?

could you explain what are you trying to achieve, source.InjectFrom(null), are you trying to set all properties to null or default values or ... ??? — Omu, Mar 14 '11 at 17:36
@omu edited, I want to assign the whole source object to null if the parameter is null. — Shawn Mclean, Mar 14 '11 at 22:14

score 0 · Answer 1 · answered Mar 15 '11 at 07:58

for your scenario usually I would throw an error that the user tries to edit an entity that doesn't exist, but anyway, you could do it like this:

var o = repo.get(7);
var vm = new ViewModel();

if (o != null) vm.InjectFrom(o);

or

vm.InjectFrom(o ?? new Entity());

Map null using ValueInjecter

1 Answers1