Question

Within my class I have a class that imports a type like this:

[Import]
public ContactViewModel ContactViewModel { get; set; }

The type is defined like this:

[PartCreationPolicy(CreationPolicy.NonShared)]
[Export(typeof(ContactViewModel))]
public class ContactViewModel {}

I am expecting whenever I would read from the property, to get a new instance right?
Or maybe not…I keep getting the same instance, how do I force t to make me a new instance when using the property?

Many Thanks,

Answer 1

Are you sure you are recomposing your consumer class? The NonShared creation policy will ensure that a new instance is created each time the part is required to compose, so I would check the other side of it, which is the class where you are [Import]-ing your part. Is that class being recomposed correctly?

Your other option is to use an ExportFactory, e.g.:

[Import] public ExportFactory<ContactViewModel> ViewModelFactory { get; set; }