ProcessBar use in WPF

MainWindow.xaml.cs

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//How To use Processbar in WPF
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  <ProgressBar Name="PbMain" Margin="3" Height="30" Width="400" />
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//Code Behind
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public partial class MainWindow
{
         //Create a Delegate that matches the Signature of the ProgressBar's SetValue method
        private delegate void UpdateProgressBarDelegate(DependencyProperty dp, Object value);
        readonly UpdateProgressBarDelegate _updatePbDelegate;
 
        public void DoProcess()
        {
                //Initialize Processbar
                pbMain.Maximum = 100;
                pbMain.Minimum = 0;
                pbMain.Value = 0;
                for(int i=0;i<100;i++)
                {
                        pbMain.Value++;
                        Dispatcher.Invoke(_updatePbDelegate,
                              System.Windows.Threading.DispatcherPriority.Background,
                                 new object[] { System.Windows.Controls.Primitives.RangeBase.ValueProperty, pbMain.Value });
                }
        }
}