WpfToolkit DataGrid does not work in Windows Phone 7

I am trying to use WpfToolkit DataGrid in Windows Phone 7 project (Silverligt 4) and it's not working. Here is the XAML:

<UserControl x:Class="SilverlightControls.Grid"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    xmlns:wtk="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit"
    d:DesignHeight="480" d:DesignWidth="480">

    <Grid x:Name="LayoutRoot" Background="#FF1F1F1F" Width="960">
        <Grid x:Name="TitleGrid">
            <TextBlock Text="{Binding Title}" Style="{StaticResource PhoneTextPageTitle2Style}"/>
        </Grid>
        <wtk:DataGrid>
        </wtk:DataGrid>
    </Grid>
</UserControl>

The project compiles fine but crashes at runtime trying to load this control. The best clue I got so far is from Visual Studio Designer. Once I add wtk:DataGrid to the control the visual designer does not load and below is the exception it displays.

Could it be that WpfToolkit relies on PresentationFramework.dll and it's not available in SL4?

System.Reflection.Adds.UnresolvedAssemblyException
Type universe cannot resolve assembly: PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.
   at System.Reflection.Adds.AssemblyProxy.GetResolvedAssembly()
   at System.Reflection.Adds.AssemblyProxy.get_FullName()
   at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.PrepareAttributes(Reflectable`1 reflectableAssembly)
   at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.PrepareAttributes(Reflectable`1 reflectableType)
   at MS.Internal.Metadata.ClrType.GetAttributes[T](ReflectionMetadataContext context, IReflectable`1 member, ITypeMetadata attributeType, Boolean merge, AttributeMergeCache& cache)
   at MS.Internal.Metadata.ClrMember`1.GetLocalAttributes(ITypeMetadata attributeType)
   at MS.Internal.Design.Metadata.Xaml.XamlType.GetSpecialProperty(Int32 idx, PropertyIdentifier pid)
   at MS.Internal.Design.Metadata.Xaml.XamlType.get_ContentProperty()
   at Microsoft.Windows.Design.Metadata.Xaml.XamlExtensionImplementations.GetContentProperty(ITypeMetadata sourceType)
   at Microsoft.Windows.Design.Metadata.Xaml.XamlExtensions.GetContentProperty(ITypeMetadata source)
   at MS.Internal.Design.Metadata.ReflectionTypeNode.get_ContentProperty()
   at MS.Internal.Design.Markup.XmlElement.CalcChildWhitespaceImportant(XamlElement element)
   at MS.Internal.Design.Markup.XmlElement.ConvertChildrenToXaml(XamlElement result, PrefixScop开发者_如何学Pythone scope, IParseContext context, IMarkupSourceProvider provider, Boolean childrenAsString)
   at MS.Internal.Design.Markup.XmlElement.ConvertToXaml(XamlElement parent, PrefixScope parentScope, IParseContext context, IMarkupSourceProvider provider)
   at MS.Internal.Design.Markup.XmlElement.ConvertChildrenToXaml(XamlElement result, PrefixScope scope, IParseContext context, IMarkupSourceProvider provider, Boolean childrenAsString)
   at MS.Internal.Design.Markup.XmlElement.ConvertToXaml(XamlElement parent, PrefixScope parentScope, IParseContext context, IMarkupSourceProvider provider)
   at MS.Internal.Design.DocumentModel.DocumentTrees.Markup.XamlSourceDocument.ParseElementFromSkeleton(XamlParseContext context, SkeletonNode node, XamlElement parent, Boolean fullElement)
   at MS.Internal.Design.DocumentModel.DocumentTrees.Markup.XamlSourceDocument.UpdateSkeleton(IDamageListener listener)
   at Microsoft.Windows.Design.DocumentModel.Trees.MarkupDocumentTreeManager.Update()
   at Microsoft.Windows.Design.DocumentModel.MarkupProducer.Update()
   at Microsoft.Windows.Design.DocumentModel.MarkupProducer.HandleMessage(DocumentTreeCoordinator sender, MessageKey key, MessageArguments args)
   at Microsoft.Windows.Design.DocumentModel.MarkupProducer.Microsoft.Windows.Design.DocumentModel.IDocumentTreeConsumer.HandleMessage(DocumentTreeCoordinator sender, MessageKey key, MessageArguments args)
   at Microsoft.Windows.Design.DocumentModel.DocumentTreeCoordinator.SendMessage[T](MessageKey`1 key, T args, Boolean isPrivateMessage)
   at Microsoft.Windows.Design.DocumentModel.DocumentTreeCoordinator.QueuedMessage`1.Microsoft.Windows.Design.DocumentModel.IQueuedMessage.Invoke()
   at Microsoft.Windows.Design.DocumentModel.DocumentTreeCoordinator.ProcessQueuedMessages(Object state)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

Just when I was about to post the question, the StackOverflow tags auto-suggest showed that there is Silverlight Toolkit. Clearly this is what I should use.

Since I put all that effort into the question I will leave the question and the answer as a testemant to StackOverflow awesomeness in auto-answering my question.

EDIT You need Silverlight 3 Toolkit binaries to use DataGrid. You need to add these four references to the project:

1. System.ComponentModel.DataAnnotations.dll
2. System.Windows.Controls.Data.dll
3. System.Windows.Controls.Data.Input.dll
4. System.Windows.Data.dll