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Categories / VB.Net Tutorial / WPF

 

Null property 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=NullProperty.FastProperty, Mode=OneWay, FallbackValue=(null)}" 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 NullProperty() As [MyClass]       Get         Return Nothing       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