CODEWITHSUNDEEP
silverlightmvvmdependency-properties
Gary Joynes
Gary Joynes

Reputation: 656

Silverlight - is a DependencyProperty required in this situation?

I have a Silverlight 4 application which uses the MVVM pattern. I have: 1. A standard View 2. A standard ViewModel 3. A separate UserControl which essentially is a wrapper around a DataGrid.

I have placed the UserControl on to my View whose DataContext is the ViewModel. The ViewModel has a property which contains information required by the UserControl (configuration details for the grid). I wish to create "something" within the UserControl so I can bind to the property on the ViewModel and when this property changes the UserControl can reconfigure itself as required.

Is this something a "DependencyProperty"?

RESOLUTION:

I took sternr's advice and implemented a DependencyProperty within the UserControl in order to bind to a property on the ViewModel. I used a Visual Studio snippet from the following link to help code the property: http://wildermuth.com/2009/03/09/Silverlight_Dependency_Property_Snippet

Upvotes: 0

Views: 139

Answers (1)

sternr
sternr

Reputation: 6506

In order to use the PropertyName="{Binding}" mechanism, you have to use a DependencyProperty.
However, if you only what to enable other resources to subscribe to changes over one of your properties, it is sufficient to implement the INotifyPropertyChanged interface

Upvotes: 2

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