WPF C# Tutorial

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="DispatcherExamples" Height="300" Width="300"
    >
    
        
            
            
        

    


//File:Window.xaml.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Threading;
using System.Windows.Threading;
namespace DispatcherExamples
{
    public partial class UseVerifyAccess : System.Windows.Window
    {
        public UseVerifyAccess()
        {
            InitializeComponent();
            fromUiButton.Click += new RoutedEventHandler(fromUiButton_Click);
        }
        void fromUiButton_Click(object sender, RoutedEventArgs e)
        {
            string resultText;
            try
            {
                resultText = "Success";
            }
            catch (Exception x)
            {
                resultText = x.ToString();
            }
            Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate
            {
                result.Text = resultText;
            });
        }
    }
}