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Associating a Silverlight UserControl with a Complex Object

What is the “best” (or most commonly used) approach when associating a complex class with a user control for reuse?

I am trying to create several reusable libraries for classes, and I'm not sure which approach I should use. Example. I want to create an address library that defines the class and address (with properties Line1, Line2, etc.), Validation logic and AddressControl, which acts as a viewer / editor with associated fields for each property.

When used, I can have a client class with parameters BillingAddress, DeliveryAddress, and I would like to bind them in my client in this way:

<addressLib:AddressControl [xxx]="{Binding BillingAddress}" />

So the question is, what did I put in XXX?

I initially thought about creating a DependencyProperty 'Address' in the control:

<addressLib:AddressControl Address="{Binding BillingAddress}" />

But now I think that I could just use the existing DataContext property?

<addressLib:AddressControl DataContext="{Binding BillingAddress}" />

Is this a better approach? Are there any problems, for example. updates or problems with NotifyPropertyChange?

Many thanks for your help!

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2 answers

The only difference that should be remembered is that with the dependency property you get a notification about the change, and you do not execute it with the datacontext (at least until SL5 is absent)

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DataContext ( BillingAddress) - . DataTemplate ItemsControl, DataContext , , "{Binding}".

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