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

1. VB.Net
2. Windows Presentation Foundation
3. Command

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(d 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

   
    
    
    
  

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