Question

hi we have a PRISM WPF MVP application, we would like to have a state to share data between the views in the same module. Since PRISM by default doesnt have a state, was wondering if there is any way i could implement this. Presently i have injected a State with Dictionary as back-store, but the problem is its Global i.e available across the modules. i would really like to scope this injection being module specific.

I believe unity allows registering different classes to the same interface based on name, not sure if the only choice i have is to leverage that for my scenario.

Any help would be great! Thanks!

-ioWint

Answer 1

thanks for your updated solution. I was trying to avoid a name based Unity registration, which would force my Presenter in knowing the Modules State registration Key.
I was reading stackoverflow posts on Unity and found the discussion over here Is it possible to override parameter values when using Method Injection with Unity? .

After couple of hours of trial and errors, i ended up achieving the desired functionality.

What i have done:

I have a BaseClass for my Modules -> BaseModule:IModule i have a State Property in it which conforms to my IStateService defined in the Infrastructure.Interface. I Instantiate this State property in the BaseModule() constructor.
Note: to go with this approach i have to make my Presenter’s have a public IStateService State; property..

At the time of registering the Presenter in the module, i am specifying

<UnityContainer>.RegisterType<MyPresenter, new InjectionProperty("State", State).

Am overriding a public property in Presenter which has name “State” with the State instance value defined in the Module.
this way i am able to get the Modules State as the State for each of the View’s presenter.

Thanks guys for directing me towards a solution.

-ioWint