System.Windows.Markup.XamlParseException: Необходимо создать DependencySource в том же потоке, в котором создан DependencyObject. ---> System.ArgumentException: Необходимо создать DependencySource в том же потоке, в котором создан DependencyObject.
   в System.Windows.DependencyObject.ValidateSources(DependencyObject d, DependencySource[] newSources, Expression expr)
   в System.Windows.Expression.ChangeSources(DependencyObject d, DependencyProperty dp, DependencySource[] newSources)
   в System.Windows.Data.BindingExpressionBase.ChangeSources(DependencyObject target, DependencyProperty dp, WeakDependencySource[] newSources)
   в System.Windows.Data.BindingExpressionBase.ChangeSources(WeakDependencySource[] newSources)
   в System.Windows.Data.BindingExpression.ChangeWorkerSources(WeakDependencySource[] newWorkerSources, Int32 n)
   в MS.Internal.Data.ClrBindingWorker.ReplaceDependencySources()
   в MS.Internal.Data.ClrBindingWorker.NewValueAvailable(Boolean dependencySourcesChanged, Boolean initialValue, Boolean isASubPropertyChange)
   в MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
   в MS.Internal.Data.ClrBindingWorker.AttachDataItem()
   в System.Windows.Data.BindingExpression.Activate(Object item)
   в System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)
   в System.Windows.Data.BindingExpression.AttachOverride(DependencyObject target, DependencyProperty dp)
   в System.Windows.Data.BindingExpressionBase.Attach(DependencyObject target, DependencyProperty dp)
   в System.Windows.Data.BindingExpressionBase.OnAttach(DependencyObject d, DependencyProperty dp)
   в System.Windows.StyleHelper.GetInstanceValue(UncommonField`1 dataField, DependencyObject container, FrameworkElement feChild, FrameworkContentElement fceChild, Int32 childIndex, DependencyProperty dp, Int32 i, EffectiveValueEntry& entry)
   в System.Windows.StyleHelper.GetChildValueHelper(UncommonField`1 dataField, ItemStructList`1& valueLookupList, DependencyProperty dp, DependencyObject container, FrameworkObject child, Int32 childIndex, Boolean styleLookup, EffectiveValueEntry& entry, ValueLookupType& sourceType, FrameworkElementFactory templateRoot)
   в System.Windows.StyleHelper.GetChildValue(UncommonField`1 dataField, DependencyObject container, Int32 childIndex, FrameworkObject child, DependencyProperty dp, FrugalStructList`1& childRecordFromChildIndex, EffectiveValueEntry& entry, ValueLookupType& sourceType, FrameworkElementFactory templateRoot)
   в System.Windows.StyleHelper.GetValueFromTemplatedParent(DependencyObject container, Int32 childIndex, FrameworkObject child, DependencyProperty dp, FrugalStructList`1& childRecordFromChildIndex, FrameworkElementFactory templateRoot, EffectiveValueEntry& entry)
   в System.Windows.StyleHelper.ApplyTemplatedParentValue(DependencyObject container, FrameworkObject child, Int32 childIndex, FrugalStructList`1& childRecordFromChildIndex, DependencyProperty dp, FrameworkElementFactory templateRoot)
   в System.Windows.StyleHelper.InvalidatePropertiesOnTemplateNode(DependencyObject container, FrameworkObject child, Int32 childIndex, FrugalStructList`1& childRecordFromChildIndex, Boolean isDetach, FrameworkElementFactory templateRoot)
   в System.Windows.FrameworkTemplate.InvalidatePropertiesOnTemplate(DependencyObject container, Object currentObject)
   в System.Windows.FrameworkTemplate.HandleBeforeProperties(Object createdObject, DependencyObject& rootObject, DependencyObject container, FrameworkElement feContainer, INameScope nameScope)
   в System.Windows.FrameworkTemplate.<>c__DisplayClass6.<LoadOptimizedTemplateContent>b__3(Object sender, XamlObjectEventArgs args)
   в System.Xaml.XamlObjectWriter.OnBeforeProperties(Object value)
   в System.Xaml.XamlObjectWriter.Logic_CreateAndAssignToParentStart(ObjectWriterContext ctx)
   в System.Xaml.XamlObjectWriter.WriteEndObject()
   в System.Xaml.XamlWriter.WriteNode(XamlReader reader)
   в System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlReader templateReader, XamlObjectWriter currentWriter)
   --- Конец трассировки внутреннего стека исключений ---
   в System.Windows.Markup.XamlReader.RewrapException(Exception e, Uri baseUri)
   в System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlReader templateReader, XamlObjectWriter currentWriter)
   в System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlObjectWriter objectWriter)
   в System.Windows.FrameworkTemplate.LoadOptimizedTemplateContent(DependencyObject container, IComponentConnector componentConnector, IStyleConnector styleConnector, List`1 affectedChildren, UncommonField`1 templatedNonFeChildrenField)
   в System.Windows.FrameworkTemplate.LoadContent(DependencyObject container, List`1 affectedChildren)
   в System.Windows.StyleHelper.ApplyTemplateContent(UncommonField`1 dataField, DependencyObject container, FrameworkElementFactory templateRoot, Int32 lastChildIndex, HybridDictionary childIndexFromChildID, FrameworkTemplate frameworkTemplate)
   в System.Windows.FrameworkTemplate.ApplyTemplateContent(UncommonField`1 templateDataField, FrameworkElement container)
   в System.Windows.FrameworkElement.ApplyTemplate()
   в System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   в System.Windows.UIElement.Measure(Size availableSize)
   в System.Windows.Controls.Border.MeasureOverride(Size constraint)
   в System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   в System.Windows.UIElement.Measure(Size availableSize)
   в System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
   в System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
   в System.Windows.Controls.Grid.MeasureOverride(Size constraint)
   в System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   в System.Windows.UIElement.Measure(Size availableSize)
   в System.Windows.Controls.Control.MeasureOverride(Size constraint)
   в System.Windows.Controls.TreeViewItem.MeasureOverride(Size constraint)
   в System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   в System.Windows.UIElement.Measure(Size availableSize)
   в System.Windows.Controls.StackPanel.MeasureOverride(Size constraint)
   в System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   в System.Windows.UIElement.Measure(Size availableSize)
   в MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   в System.Windows.Controls.ItemsPresenter.MeasureOverride(Size constraint)
   в System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   в System.Windows.UIElement.Measure(Size availableSize)
   в System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
   в System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
   в System.Windows.Controls.Grid.MeasureOverride(Size constraint)
   в System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   в System.Windows.UIElement.Measure(Size availableSize)
   в System.Windows.ContextLayoutManager.UpdateLayout()
   в System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
   в System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()
   в System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   в System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   в System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   в System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   в MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate()
{
.............................................
});