WPF的线程模型

 private Data myData = new Data();
private void btnTest_Click(object sender, RoutedEventArgs e)
{
ThreadStart ts = new ThreadStart(this.UpdateData);
Thread newThread = new Thread(ts);
newThread.Start();
}
private void UpdateData()
{
this.myData.TheData = 5;
}

    public class Data : DependencyObject
{
public object TheData
{
get
{
return (object)GetValue(TheDataProperty);
}
set
{
SetValue(TheDataProperty, value);
}
}
public static readonly DependencyProperty TheDataProperty =
DependencyProperty.Register("TheData", typeof(object), typeof(Data), new UIPropertyMetadata(null));
}

        private void UpdateData()
{
if (this.myData.Dispatcher.CheckAccess())
{
this.myData.TheData = 5;
}
else
{
this.myData.Dispatcher.Invoke(DispatcherPriority.Normal, (ThreadStart)delegate
{
this.myData.TheData = 5;
});
}
}

            <TextBlock x:Name="textBlock_ShowNum"
Text="{Binding ElementName=window1,Path=CurrentNum}"
VerticalAlignment="Center"
HorizontalAlignment="Center" />

            while (this.IsCalculating)
{
this.CurrentNum++;
}