Hoe to use BackgroundWorker in WPF

Sample window:

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

Code behind :

using System;
using System.Collections.Generic;
using System.Linq;
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.ComponentModel;
using WpfFinalApp.TestService;
using System.Threading;
namespace WpfFinalApp
{
    ///

    /// Interaction logic for BackgroundWorkerTest.xaml
    ///
    public partial class BackgroundWorkerTest : Window
    {
        //TestService.Service1Client service = new TestService.Service1Client();
        BackgroundWorker bg = new BackgroundWorker();
   
        public BackgroundWorkerTest()
        {
            InitializeComponent();

            //To Support cancellation
            bg.WorkerSupportsCancellation = true;
            //To Show Progress
            bg.WorkerReportsProgress = true;

            //Event Handlers
            bg.DoWork += new DoWorkEventHandler(bg_DoWork);
            bg.RunWorkerCompleted += new RunWorkerCompletedEventHandler(bg_RunWorkerCompleted);
            bg.ProgressChanged += new ProgressChangedEventHandler(bg_ProgressChanged);
        }

        void bg_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            label2.Content = e.ProgressPercentage.ToString();
        }

        void bg_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if(e.Cancelled==false)
            textBox1.Text = e.Result.ToString();
            //MessageBox.Show("bg_RunWorkerCompleted result");
        }

        void bg_DoWork(object sender, DoWorkEventArgs e)
        {
            BackgroundWorker worker = sender as BackgroundWorker;
           int i=0;
           for (i=0; i < 100; i++)
           {

               if (worker.CancellationPending)
               {
                   e.Cancel = true;
                   break;
               }
               bg.ReportProgress(i+1);
               Thread.Sleep(100);
           }
           e.Result = i;
           //textBox1.Dispatcher.BeginInvoke((Delegate)()=>{textBox1.Text=i.ToString();},null);
            //MessageBox.Show("bg_DoWork result");
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            if(!bg.IsBusy)
            bg.RunWorkerAsync();
         
        }

        private void button2_Click(object sender, RoutedEventArgs e)
        {
            if (!bg.CancellationPending)
                bg.CancelAsync();
        }
    }
}

Note : Please correct namespace and window name