C# generics with MVVM, pulling the T out of <T>
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Published on 2010-04-23T13:30:27Z
Indexed on
2010/04/23
13:33 UTC
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My Model
is a generic class that contains a (for example) Value
property which can be int, float, string, bool, etc. So naturally this class is represented something like Model<T>
. For the sake of collections Model<T>
implements the interface IModel
, although IModel
is itself empty of any content.
My ViewModel
contains and instance of Model<T>
and it is passed in through ViewModel
's constructor. I still want to know what T
is in ViewModel, so when I expose Model
to the View
I know the datatype of Model
's buried Value
property. The class for ViewModel ends up looking like the following:
class ViewModel<T>
{
private Model<T> _model;
public ViewModel(Model<T> model) { ....blah.... }
public T ModelsValue {get; set; }
}
This works fine, but is limited. So now I need to expose a collection of IModels
with varying Ts
to my View
, so I'm trying to set up an ObservableCollection
of new ViewModel<T>s
to a changing list of IModels
. The problem is, I can't figure out how to get T
from Model<T>
from IModel
to construct ViewModel<T>(Model<T>)
at runtime.
In the VS2010 debugger I can mouseover any IModel
object and see its full Model<int>
for example at runtime so I know the data is in there.
Any ideas?
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