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    copied!<p>Reed Copsey Gave you the complete answer to you question. However, I just want to point out that actually you don't need this in WPF. Usually it is automatically handled when you use MVVM pattern via <code>INotifyPropertyChanged</code> and xaml databinding. In case of synchronizing the collections you could use Multithreaded observable collection. This is the source code I use myself.</p> <pre><code>public class MultiThreadedObservableCollection&lt;T&gt; : ObservableCollection&lt;T&gt; { public override event NotifyCollectionChangedEventHandler CollectionChanged; public MultiThreadedObservableCollection() { } public MultiThreadedObservableCollection(IEnumerable&lt;T&gt; source) : base(source) { } public MultiThreadedObservableCollection(List&lt;T&gt; source) : base(source) { } protected override void OnCollectionChanged(NotifyCollectionChangedEventArgs e) { var handle = CollectionChanged; if (CollectionChanged == null) return; foreach (NotifyCollectionChangedEventHandler handler in handle.GetInvocationList()) { var dispatcherObj = handler.Target as DispatcherObject; if (dispatcherObj != null) { var dispatcher = dispatcherObj.Dispatcher; if (dispatcher != null &amp;&amp; !dispatcher.CheckAccess()) { dispatcher.BeginInvoke( (Action)(() =&gt; handler.Invoke( this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset)) ), DispatcherPriority.DataBind); continue; } } handler.Invoke(this, e); } } } </code></pre> <p>(It comes somewhere from here, stackoverflow.com but couldn't find the source, by now)</p> <p>Then you simply define your ViewModels and start changing the values. This is the most suitable, right and fast way of developing WPF applications.</p>
 

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