RoutedEvents: Key Modifiers : RoutedCommand « Windows Presentation Foundation « VB.Net Tutorial

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VB.Net Tutorial » Windows Presentation Foundation » RoutedCommand 
16.92.6.RoutedEvents: Key Modifiers
<Window x:Class="RoutedEvents.KeyModifiers"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="KeyModifiers" Height="300" Width="300">
  <StackPanel Margin="5">
    <TextBox KeyDown="KeyEvent"></TextBox>
    <TextBlock Name="lblInfo"></TextBlock>
    <Button Click="CheckShift">Check Current Shift State</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 KeyModifiers
    Inherits System.Windows.Window
    Public Sub New()
      InitializeComponent()
    End Sub

    Private Sub KeyEvent(sender As Object, e As KeyEventArgs)

      lblInfo.Text = "Modifiers: " & e.KeyboardDevice.Modifiers.ToString()

      If (e.KeyboardDevice.Modifiers And ModifierKeys.Control= ModifierKeys.Control Then
        lblInfo.Text += vbCr & vbLf & "You held the Control key."
      End If
    End Sub

    Private Sub CheckShift(sender As Object, e As RoutedEventArgs)
      If Keyboard.IsKeyDown(Key.LeftShiftThen
        lblInfo.Text = "The left Shift is held down."
      Else
        lblInfo.Text = "The left Shift is not held down."
      End If

    End Sub
  End Class
End Namespace
WPF Routed Events Key Modifiers
16.92.RoutedCommand
16.92.1.Create a custom RoutedCommand, the CommandBinding objects, and the KeyBinding objects in code.Create a custom RoutedCommand, the CommandBinding objects, and the KeyBinding objects in code.
16.92.2.Convert RoutedEventArgs.OriginalSource to event senderConvert RoutedEventArgs.OriginalSource to event sender
16.92.3.RoutedEvents: Button Mouse Up EventRoutedEvents: Button Mouse Up Event
16.92.4.RoutedEvents: Drag And DropRoutedEvents: Drag And Drop
16.92.5.RoutedEvents: Focus eventRoutedEvents: Focus event
16.92.6.RoutedEvents: Key ModifiersRoutedEvents: Key Modifiers
16.92.7.RoutedEvents: Key Press EventsRoutedEvents: Key Press Events
16.92.8.RoutedEvents: Mouse PositionRoutedEvents: Mouse Position
16.92.9.Bubble routed events, and write an event handler for a routed event.Bubble routed events, and write an event handler for a routed event.
16.92.10.Get RoutedEvent NameGet RoutedEvent Name
16.92.11.Create RoutedCommand from InputGestureCollectionCreate RoutedCommand from InputGestureCollection
16.92.12.RoutedEvents Only NumbersRoutedEvents Only Numbers
16.92.13.Routed Event DemoRouted Event Demo
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