Ensure That You Are Running on the UI Thread

    

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="100" Width="300">
    <StackPanel>
        <Button Click="ButtonTrue_Click">UI Thread</Button>
        <Button Click="ButtonFalse_Click">Non-UI Thread</Button>
    </StackPanel>
</Window>
//File:Window.xaml.vb
Imports System.Windows

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub

    Private Sub ButtonTrue_Click(sender As Object, e As RoutedEventArgs)
      Me.Dispatcher.VerifyAccess()
    End Sub

    Private Sub ButtonFalse_Click(sender As Object, e As RoutedEventArgs)
      Dim del As New VerifyAccessDelegate(AddressOf VerifyAccess)
      del.BeginInvoke(Nothing, Nothing)
    End Sub

    Private Delegate Sub VerifyAccessDelegate()

    Private Overloads Sub VerifyAccess()
      Me.Dispatcher.VerifyAccess()
    End Sub
  End Class
End Namespace

1.	Create a multi threaded web browsing application.
2.	Show a Continuous Animation During an Asynchronous Process
3.	Load the Data for a Window Asynchronously After It Has Rendered
4.	Check Whether You Are Running on the UI Thread
5.	A Cancellable ProgressBar While Processing on a Background Thread
6.	Show a Continuous Progress Bar While Processing on a Background Thread
7.	Execute a Method Asynchronously Using the Dispatcher Queue
8.	Thread Sleep in Button Click handler
9.	Execute a Method Asynchronously Using a Background Worker Thread
10.	Track the Progress of a Background Worker Thread
11.	Support the Cancellation of a Background Worker Thread
12.	Create a Background Worker Thread in XAML
13.	WPF Threading
14.	BlockThread.xaml
15.	Keep the UI from becoming non-responsive in single threaded application which performs a long operation.

Ensure That You Are Running on the UI Thread : Thread « Windows Presentation Foundation « VB.Net

Related examples in the same category