Async binding : Binding « Windows Presentation Foundation « VB.Net

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

Async binding

    

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="BindingWithFallback" Height="300" Width="300">
    <StackPanel>
      <TextBox Text="{Binding Path=MyProperty, Mode=OneWay, FallbackValue=(waiting), IsAsync=True}" IsReadOnly="True" />
    </StackPanel>
</Window>

//File:Window.xaml.vb
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Shapes


Namespace WpfApplication1

  Class [MyClass]
    Public ReadOnly Property MyProperty() As String
      Get
        System.Threading.Thread.Sleep(2000)
        Return "BBB"
      End Get
    End Property
  End Class

  Public Partial Class Window1
    Inherits System.Windows.Window

    Public Sub New()
      InitializeComponent()
      DataContext = New [MyClass]()
    End Sub

  End Class
End Namespace

   
    
    
    
  

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