Get Selected Item from ListBox
<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