RoutedEvents: Key Press Events
<Window x:Class="RoutedEvents.KeyPressEvents"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="KeyPressEvents" Height="400" Width="400" >
<StackPanel>
<DockPanel Margin="5">
<TextBlock Margin="3" >Type here:</TextBlock>
<TextBox PreviewKeyDown="KeyEvent" KeyDown="KeyEvent"
PreviewKeyUp="KeyEvent" KeyUp="KeyEvent"
PreviewTextInput="TextInput"
TextChanged="TextChanged"></TextBox>
</DockPanel>
<ListBox Margin="5" Name="lstMessages"></ListBox>
<CheckBox Margin="5" Name="chkIgnoreRepeat">Ignore Repeated Keys</CheckBox>
<Button Click="cmdClear_Click" HorizontalAlignment="Right">Clear List</Button>
</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 RoutedEvents
Public Partial Class KeyPressEvents
Inherits System.Windows.Window
Public Sub New()
InitializeComponent()
End Sub
Private Sub KeyEvent(sender As Object, e As KeyEventArgs)
If CBool(chkIgnoreRepeat.IsChecked) AndAlso e.IsRepeat Then
Return
End If
Dim message As String = "Event: " & Convert.ToString(e.RoutedEvent) & " " & " Key: " & Convert.ToString(e.Key)
lstMessages.Items.Add(message)
End Sub
Private Sub TextInput(sender As Object, e As TextCompositionEventArgs)
Dim message As String = "Event: " & Convert.ToString(e.RoutedEvent) & " " & " Text: " & e.Text
lstMessages.Items.Add(message)
End Sub
Private Sub TextChanged(sender As Object, e As TextChangedEventArgs)
Dim message As String = "Event: " & Convert.ToString(e.RoutedEvent)
lstMessages.Items.Add(message)
End Sub
Private Sub cmdClear_Click(sender As Object, e As RoutedEventArgs)
lstMessages.Items.Clear()
End Sub
End Class
End Namespace
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