I have created an Extended TextBox
that Inherits a standard WPF TextBox
, what I am now trying to do is create other extended control types like a TextBlock
, ListBox
, ComboBox
etc. All controls will have the same DependencyProperties as shown below so I am trying to find a way to implement this without repeating the DependencyProperty
code behind each new extended control.
Public Class ExtendedTextBox
Inherits TextBox
Public Shared MandatoryProperty As DependencyProperty = DependencyProperty.Register("Mandatory", GetType(Boolean), GetType(ExtendedTextBox))
Public Shared ReadOnly HasAnyErrorsProperty As DependencyProperty = DependencyProperty.Register("HasAnyErrors", GetType(Boolean), GetType(ExtendedTextBox))
End Class
You could define attached properties that can be set on any UIElement
:
Public Class MyProperties
Public Shared ReadOnly MandatoryProperty As DependencyProperty = DependencyProperty.RegisterAttached("Mandatory", GetType(Boolean), GetType(MyProperties))
Public Shared Sub SetMandatory(ByVal element As UIElement, ByVal value As Boolean)
element.SetValue(MandatoryProperty, value)
End Sub
Public Shared Function GetMandatory(ByVal element As UIElement) As Boolean
Return CType(element.GetValue(MandatoryProperty), Boolean)
End Function
End Class
XAML:
<TextBox local:MyProperties.Mandatory="True" />
<ListBox local:MyProperties.Mandatory="False" />