Command Handler Key Binding : Key Event « Windows Presentation Foundation « VB.Net

1. VB.Net
2. Windows Presentation Foundation
3. Key Event

Command Handler Key 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="commandWithHandler" Name="root">
  
  <Window.CommandBindings>
    <CommandBinding Command="ApplicationCommands.Open"
                    Executed="OpenCmdExecuted"
                    CanExecute="OpenCmdCanExecute"/>
  </Window.CommandBindings>


  <Window.InputBindings>
    <KeyBinding Command="ApplicationCommands.Open" Gesture="CTRL+R" />
  </Window.InputBindings>

  <StackPanel>
    <Button Command="ApplicationCommands.Open" Name="MyButton"
            Height="50" Width="200">
      Open (KeyBindings: Ctrl+R, Ctrl+0)
    </Button>
  </StackPanel>
</Window>
//File:Window.xaml.vb

Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Input

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub OpenCmdExecuted(target As Object, e As ExecutedRoutedEventArgs)
      Dim command As [String], targetobj As [String]
      command = DirectCast(e.Command, RoutedCommand).Name
      targetobj = DirectCast(target, FrameworkElement).Name
      MessageBox.Show(command & " : " & targetobj)
    End Sub
    Private Sub OpenCmdCanExecute(sender As Object, e As CanExecuteRoutedEventArgs)
      e.CanExecute = True
    End Sub
  End Class
End Namespace

   
    
    
    
  

Related examples in the same category

1.	Creating a KeyBinding between the Open command and Ctrl-R
2.	Use Keyboard.Focus to set the focus to a Text Field
3.	Provide Quick Keyboard Access to Buttons
4.	Reading keyboard modifiers
5.	Reading individual key state with Keyboard.IsKeyDown
6.	Use InputBinding to bind Application commends to Key events
7.	Suppress Keyboard and Mouse Events
8.	Query Left / Right control key
9.	Is Key.CapsLock Toggled
10.	Keyboard.IsKeyToggled
11.	Query Number lock key
12.	Use KeyBinding to bind Key event to TextBox.InputBindings
13.	Custom Command by KeyGesture and RoutedUICommand
14.	TextBox PreviewKeyDown, PreviewKeyUp, PreviewTextInput, KeyDown, KeyUp and TextChanged events
15.	StackPanel PreviewTextInput and PreviewKeyDown
16.	If input is not a number do not handle the key event
17.	RoutedEvents: Tunneled Key Press
18.	On Key Down Handler