Use ObservableCollection as Resource : ObservableCollection « Windows Presentation Foundation « VB.Net Tutorial






<Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:src="clr-namespace:ListBoxEvent"  x:Class="ListBoxEvent.Pane1">
  <Canvas.Resources>
    <src:myColors x:Key="Colors"/>
  </Canvas.Resources>

  <StackPanel>
      <TextBox Name="tb" Width="140" Height="30"></TextBox>
      <ListBox Name="lb" Width="100" Height="55" SelectionChanged="PrintText" SelectionMode="Single">
        <ListBoxItem>Item 1</ListBoxItem>
        <ListBoxItem>Item 2</ListBoxItem>
        <ListBoxItem>Item 3</ListBoxItem>
        <ListBoxItem>Item 4</ListBoxItem>
        <ListBoxItem>Item 5</ListBoxItem>
        <ListBoxItem>Item 6</ListBoxItem>
        <ListBoxItem>Item 7</ListBoxItem>
        <ListBoxItem>Item 8</ListBoxItem>
        <ListBoxItem>Item 9</ListBoxItem>
        <ListBoxItem>Item 10</ListBoxItem>
      </ListBox>
  </StackPanel>

</Canvas>
//File:Window.xaml.vb

Imports System
Imports System.ComponentModel
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Documents
Imports System.Windows.Navigation
Imports System.Windows.Shapes
Imports System.Windows.Data
Imports System.Windows.Media
Imports System.Collections.ObjectModel

Namespace ListBoxEvent
  Public Class myColors
    Inherits ObservableCollection(Of String)
    Public Sub New()
      Add("A")
      Add("B")
      Add("C")
      Add("D")
      Add("E")
      Add("F")
    End Sub
  End Class
  Public Partial Class Pane1
    Inherits Canvas

    Public Sub New()
      MyBase.New()
      InitializeComponent()
    End Sub
    Private Sub PrintText(sender As Object, args As SelectionChangedEventArgs)
      Dim lbi As ListBoxItem = TryCast(TryCast(sender, ListBox).SelectedItem, ListBoxItem)
      tb.Text = "   You selected " & lbi.Content.ToString() & "."
    End Sub
  End Class
End Namespace
WPF Use Observable Collection As Resource








16.104.ObservableCollection
16.104.1.Bind to ObservableCollectionBind to ObservableCollection
16.104.2.Create Collection based Resource for data bindingCreate Collection based Resource for data binding
16.104.3.Use ObservableCollection as ResourceUse ObservableCollection as Resource
16.104.4.Bind to ObservableCollection and ItemsSourceBind to ObservableCollection and ItemsSource