Property changed callback : Command « Windows Presentation Foundation « VB.Net Tutorial

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VB.Net Tutorial » Windows Presentation Foundation » Command 
16.89.5.Property changed callback
<Window x:Class="WpfApplication1.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Window1" Height="300" Width="300">

    <StackPanel>
      <TextBox x:Name="uv" Text="{Binding Path=UserValue, UpdateSourceTrigger=PropertyChanged}" 
               />

    </StackPanel>

</Window>


//File:Window1.xaml.cs
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
      DataContext = Me
    End Sub
    Private Shared Sub UserValue_PropertyChangedCallback(As DependencyObject, e As DependencyPropertyChangedEventArgs)
      Dim window1 As Window1 = TryCast(d, Window1)

      If window1 IsNot Nothing Then
        window1.uv.Foreground = Brushes.SeaGreen
      End If
    End Sub
  End Class
End Namespace
WPF Property Changed Callback
16.89.Command
16.89.1.Invoking Copy command with a ButtonInvoking Copy command with a Button
16.89.2.Button CommandTarget BindingButton CommandTarget Binding
16.89.3.Creating CommandBinding and attaching an Executed and CanExecute handlerCreating CommandBinding and attaching an Executed and CanExecute handler
16.89.4.Command Handler Command Binding in XamlCommand Handler Command Binding in Xaml
16.89.5.Property changed callbackProperty changed callback
16.89.6.Using CommandBinding and ExecutedRoutedEventHandler to bind Application event to an event handler methodUsing CommandBinding and ExecutedRoutedEventHandler to bind Application event to an event handler method
16.89.7.Create CommandBindings in Xaml and bind to ButtonCreate CommandBindings in Xaml and bind to Button
16.89.8.Bind TextBox save command to CommandBindingBind TextBox save command to CommandBinding
16.89.9.Press F1 to get helpPress F1 to get help
16.89.10.Help commandHelp command
16.89.11.Command EnablingCommand Enabling
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