title: MvxObservableCollection AddRange
body: <p>I have viewmodel (with Fody INPC):</p>
  
  <pre><code>public sealed class ItemsViewModel : MvxViewModel, IMvxNotifyPropertyChanged
  {
      private readonly IItemsService itemsService;
  
      public MvxObservableCollection&lt;Item&gt; ItemsCollection { get; private set; }
      public IMvxCommand GetItemsCommand { get; private set; }
  
      private async void GetItemsAsync()
      {
          var items = await itemsService.GetItemsAsync();
          ItemsCollection.Clear();
          ItemsCollection.AddRange(items);
      }
  
      public ItemsViewModel(IItemsService itemsService)
      {
          this.itemsService = itemsService;
          ItemsCollection = new MvxObservableCollection&lt;Item&gt;();
          GetItemsCommand = new MvxCommand(() =&gt; GetItemsAsync());
      }
  }
  </code></pre>
  
  <p>AddRange(items) work fine. Later, I add view for this viewmodel:</p>
  
  <pre><code>&lt;views:MvxWpfView x:Class="MyApp.ItemsView"
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                xmlns:views="clr-namespace:MvvmCross.Platforms.Wpf.Views;assembly=MvvmCross.Platforms.Wpf"&gt;
  
  &lt;Grid&gt;
      &lt;Grid.RowDefinitions&gt;
          &lt;RowDefinition Height="Auto"/&gt;
          &lt;RowDefinition/&gt;
      &lt;/Grid.RowDefinitions&gt;
  
      &lt;Button Content="Get Items" Command="{Binding GetItemsCommand}"/&gt;
  
      &lt;ListView Grid.Row="1" ItemsSource="{Binding ItemsCollection}"/&gt;
  &lt;/Grid&gt;
  </code></pre>
  
  <p></p>
  
  <p>and it's code behind:</p>
  
  <pre><code>[MvxViewFor(typeof(ItemsViewModel))]
  partial class ItemsView
  {
      public DocumentTypeEditorView()
      {
          InitializeComponent();
      }
  }
  </code></pre>
  
  <p>Now, when I click button, I get error "Range actions are not supported." When I remove ListView from xaml, all works fine.
  I can change ListView to DataGrid or another list control - error will be the same!</p>
  
  <p>I want to know, how can I bind my view to MvxObservableCollection ?</p>