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    <p>Try using an <code>ObservableCollection&lt;T&gt;</code> instead of the collection you are using now.</p> <p>This should cause the View to be updated whenever an Item is added or removed from the collection.</p> <p>Just remember when interacted with the <code>ObservableCollection</code> to Invoke the Dispatcher otherwise you will get Thread Access Exceptions</p> <p>Here is the code I did to test this.</p> <p>XAML</p> <pre><code>&lt;Window.Resources&gt; &lt;loc:MyViewModel x:Key="ViewModel" /&gt; &lt;/Window.Resources&gt; &lt;Canvas DataContext="{StaticResource ViewModel}"&gt; &lt;DataGrid ItemsSource="{Binding Collection}" Width="150" Height="200"&gt; &lt;DataGrid.Columns&gt; &lt;DataGridTextColumn Header="Nom" Binding="{Binding Nom}" Width="150" IsReadOnly="True" /&gt; &lt;/DataGrid.Columns&gt; &lt;/DataGrid&gt; &lt;Button Command="{Binding DoStuffCommand}" Canvas.Bottom="0" Canvas.Right="0"&gt;Stuff&lt;/Button&gt; &lt;/Canvas&gt; </code></pre> <p>ViewModel</p> <pre><code>public class MyViewModel { public ObservableCollection&lt;MyModel&gt; Collection { get; set; } public ICommand DoStuffCommand { get; set; } public MyViewModel() { this.Collection = new ObservableCollection&lt;MyModel&gt;(); for (int i = 0; i &lt; 10; i++) { Collection.Add(new MyModel { Nom = i.ToString() }); } this.DoStuffCommand = new RelayCommand(DoStuff); } private void DoStuff() { foreach (var item in Collection) { item.Nom = item.Nom + "."; } } } </code></pre> <p>Model</p> <pre><code>public class MyModel : INotifyPropertyChanged { private string nom; public string Nom { get { return nom; } set { nom = value; RaiseChanged("Nom"); } } public event PropertyChangedEventHandler PropertyChanged; private void RaiseChanged(string propertyName) { var handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } } </code></pre> <p>It updated the Nom in the view.</p>
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    1. POexecute a function in a viewmodel and real time refresh of the view
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    1. COI not add or remove items, just change items property, and every property call propertyChanged events. The model that I use for the collection implement INotifyPropertyChange
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    2. COAt the end of processing try invoking the `PropertyChanged` event with the name of the collection, if you are using `INotifyPropertyChanged` on the collection items they should bubble up through the `ObservableCollection`
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    3. COShould be occurring in your view model. Although you may wish to update your question with relevant code. It will probably attract more answers.
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