Silverlight dependency property not updating
The control just changes background color when you set the enum to On (green), or Off (red). The problem is that the dependency property will take the enum member with number 0 as default, On Off. And when setting the value in XAML (or code for that matter) will not update the property backing the dependency property: The code to render this is found here: As you can see the left one is NOT green. On (value 0), and setting it (again) to On doesn’t trigger the execution of On Property Changed Callback.We can solve this (of course, otherwise what would be the point of writing this?😛 ) The first solution you might think about is setting the default value of the Dependency Property’s default value.Maybe –1 for example, so that at least the engine can detect a change.In order to get a workaround I found a solution in which I get notified with help of the binding system.I simple use a relay object which value property is bound to the source property I want to get notified.
This is quite easy in WPF: does exist in Silverlight.
Calls to Override Metadata must be performed within the static constructors of the type that provides itself as the parameter of Override Metadata.
If you attempt to change metadata once instances of the owner type exist, this will not raise exceptions, but will result in inconsistent behaviors in the property system.
In the following example, the custom class Public Class My State Control Inherits Button Base Public Sub New() My Base.
New() End Sub Public Property State() As Boolean Get Return CType(Me.
The class "Data Toolbar" is a User Control derived from "Toolbar", it adds some specific content to the base toolbar and adds a Dependency Property for a Map control...