Set interval and event handler for DispatcherTimer : Event « Windows Presentation Foundation « VB.Net

Home
VB.Net
1.2D
2.Application
3.Class
4.Data Structure
5.Data Types
6.Database ADO.net
7.Development
8.Event
9.File Directory
10.Generics
11.GUI
12.Language Basics
13.LINQ
14.Network Remote
15.Security
16.Thread
17.Windows Presentation Foundation
18.Windows System
19.XML
20.XML LINQ
VB.Net Tutorial
VB.Net by API
VB.Net » Windows Presentation Foundation » EventScreenshots 
Set interval and event handler for DispatcherTimer
Set interval and event handler for DispatcherTimer
     


<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="KeyboardInput" Height="300" Width="300">
    <Grid>
        
    </Grid>
</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
Imports System.Windows.Threading
Imports System.Diagnostics


Namespace WpfApplication1
  Public Partial Class Window1
    Inherits System.Windows.Window
    Private dt As New DispatcherTimer()
    Public Sub New()
      InitializeComponent()
      dt.Interval = TimeSpan.FromSeconds(0.5)
      AddHandler dt.Tick, New EventHandler(AddressOf dt_Tick)
      dt.Start()
    End Sub

    Private Sub dt_Tick(sender As Object, e As EventArgs)

      If (Keyboard.Modifiers And ModifierKeys.Control<> Then
        Console.WriteLine("ModifierKeys.Control")
      End If
      Dim homeKeyPressed As Boolean = Keyboard.IsKeyDown(Key.Home)
      Debug.WriteLine("Home pressed: " & homeKeyPressed)
    End Sub

  End Class
End Namespace

   
    
    
    
    
  
Related examples in the same category
1.Get event sender from eventGet event sender from event
2.Handle the ContentRendered eventHandle the ContentRendered event
3.Find source element of an element in event handler by castingFind source element of an element in event handler by casting
4.Add an event handler to an element using codeAdd an event handler to an element using code
5.Halting event routing with HandledHalting event routing with Handled
6.Security ExceptionSecurity Exception
7.Throw Handled ExceptionThrow Handled Exception
8.Check handler event senderCheck handler event sender
9.Do event based on button nameDo event based on button name
10.Add event handler to StackPanel in StackPanel resourceAdd event handler to StackPanel in StackPanel resource
11.Add a PropertyChangedValueCallback to Any Dependency PropertyAdd a PropertyChangedValueCallback to Any Dependency Property
12.Handle a Button Click with Shared button click handlerHandle a Button Click with Shared button click handler
13.DispatcherTimer and EventHandlerDispatcherTimer and EventHandler
14.Thumb DragStarted and DragCompleted event handlerThumb DragStarted and DragCompleted event handler
15.Get the event sender nameGet the event sender name
16.Event firing sequenceEvent firing sequence
17.Cancel event by setting CanExecute and Handled to falseCancel event by setting CanExecute and Handled to false
18.Event sender, event source and event original sourceEvent sender, event source and event original source
19.Cast event sender to a controlCast event sender to a control
20.Fire an event when an element gains and loses focus.Fire an event when an element gains and loses focus.
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.