Content update - Custom dependency properties (user story 1878471) (#1189)

* Add article, code projects, toc, and redirects * Update dotnet-desktop-guide/net/wpf/properties/custom-dependency-properties.md Co-authored-by: Andy (Steve) De George <[email protected]> * Update dotnet-desktop-guide/net/wpf/properties/custom-dependency-properties.md Co-authored-by: Andy (Steve) De George <[email protected]> Co-authored-by: Andy (Steve) De George <[email protected]>
2026-09-08 23:43:29 +02:00 · 2021-10-28 13:46:54 -07:00
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+Namespace CodeSampleVb
+
+    ' <summary>
+    ' Interaction logic for MainWindow.xaml.
+    ' </summary>
+    Partial Public Class MainWindow
+        Inherits Window
+
+        Public Sub New()
+            InitializeComponent()
+        End Sub
+    End Class
+
+    Public Class Aquarium
+        Inherits DependencyObject
+
+        '<RegisterDependencyPropertyWithWrapper>
+        '<RegisterDependencyProperty>
+        ' Register a dependency property with the specified property name,
+        ' property type, owner type, and property metadata.
+        Private Shared ReadOnly s_aquariumGraphicProperty As DependencyProperty =
+            DependencyProperty.Register(
+                name:="AquariumGraphic",
+                propertyType:=GetType(Uri),
+                ownerType:=GetType(Aquarium),
+                typeMetadata:=New FrameworkPropertyMetadata(
+                    defaultValue:=New Uri("http://www.contoso.com/aquarium-graphic.jpg"),
+                    flags:=FrameworkPropertyMetadataOptions.AffectsRender,
+                    propertyChangedCallback:=New PropertyChangedCallback(AddressOf OnUriChanged)))
+
+        ' Store the dependency property identifier as a static member of the class.
+        Public Shared ReadOnly AquariumGraphicProperty As DependencyProperty =
+            s_aquariumGraphicProperty
+        '</RegisterDependencyProperty>
+
+        ' Declare a read-write property.
+        Public Property AquariumGraphic As Uri
+            Get
+                Return CType(GetValue(AquariumGraphicProperty), Uri)
+            End Get
+            Set
+                SetValue(AquariumGraphicProperty, Value)
+            End Set
+        End Property
+        '</RegisterDependencyPropertyWithWrapper>
+
+        Private Shared Sub OnUriChanged(dependencyObject As DependencyObject, e As DependencyPropertyChangedEventArgs)
+            Dim shape As Shape = CType(dependencyObject, Shape)
+            shape.Fill = New ImageBrush(New BitmapImage(CType(e.NewValue, Uri)))
+        End Sub
+
+    End Class
+
+End Namespace