Dependency property validation or coercion in WinRT

Question

Hi!

I'm building a custom control in c# and I need to validate a dependency property.

I found out that ValidateValueCallback and CoerceValueCallback are not available win WinRT.

Does anyone know how to overcome this ?

Thanks,

Aline

Answer 1

You can create a callback in your PropertyMetadata which will be called when the property changes and this can be leveraged by a validation system. See Property metadata for a custom dependency property

You can search for solutions people have used for validating in Silverlight. The same concepts will apply here.

--Rob

Answer 2

Hi Rob,

Thank you for your answer, but I'd like to prevent value from being assigned and not have to reassign it.

I've chosen to throw an exception back to the app using my control.

Aline