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Only MetroTheme works in WPF app

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Lutz asked on 12 Jun 2012, 11:30 PM

I am using the StyleManager.ApplicationTheme function to set the theme of my app. When I assign MetroTheme() everything works fine, but if I assign any of the others (like Expression_DarkTheme), the app crashes with a NullReferenceException in PresentationFramework.dll when I try to show a new window that's docked.
The app starts up fine and shows the correct theming, but when I click on the button that shows my window, the exception is thrown.
Usually the location is in the MeasureOverride() functions of on the the Panels (I've seen it in ProportionalStackPanel and DockingPanel)

I'm setting the theme as per the documentation in my constructor. This is my code:

public MainWindow()

{

//StyleManager.ApplicationTheme = new Expression_DarkTheme(); // Crashes

StyleManager.ApplicationTheme = new MetroTheme();

//StyleManager.ApplicationTheme = new VistaTheme(); // Crashes

//StyleManager.ApplicationTheme = new Windows7Theme(); // Crashes

//StyleManager.ApplicationTheme = new Office_BlackTheme(); // Crashes

//StyleManager.ApplicationTheme = new Office_SilverTheme(); // Crashes

//StyleManager.ApplicationTheme = new TransparentTheme(); // Crashes

InitializeComponent();

DataContext = ViewModel = new ShellViewModel();

}

This is the callstack:

at System.Windows.StyleHelper.GetInstanceValue(UncommonField`1 dataField, DependencyObject container, FrameworkElement feChild, FrameworkContentElement fceChild, Int32 childIndex, DependencyProperty dp, Int32 i, EffectiveValueEntry& entry)

at 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)

at System.Windows.StyleHelper.GetChildValue(UncommonField`1 dataField, DependencyObject container, Int32 childIndex, FrameworkObject child, DependencyProperty dp, FrugalStructList`1& childRecordFromChildIndex, EffectiveValueEntry& entry, ValueLookupType& sourceType, FrameworkElementFactory templateRoot)

at System.Windows.StyleHelper.GetValueFromStyleOrTemplate(FrameworkObject fo, DependencyProperty dp, EffectiveValueEntry& entry)

at System.Windows.StyleHelper.ApplyStyleOrTemplateValue(FrameworkObject fo, DependencyProperty dp)

at System.Windows.StyleHelper.InvalidateContainerDependents(DependencyObject container, FrugalStructList`1& exclusionContainerDependents, FrugalStructList`1& oldContainerDependents, FrugalStructList`1& newContainerDependents)

at System.Windows.StyleHelper.DoThemeStyleInvalidations(FrameworkElement fe, FrameworkContentElement fce, Style oldThemeStyle, Style newThemeStyle, Style style)

at System.Windows.StyleHelper.UpdateThemeStyleCache(FrameworkElement fe, FrameworkContentElement fce, Style oldThemeStyle, Style newThemeStyle, Style& themeStyleCache)

at System.Windows.FrameworkElement.OnThemeStyleChanged(DependencyObject d, Object oldValue, Object newValue)

at System.Windows.StyleHelper.GetThemeStyle(FrameworkElement fe, FrameworkContentElement fce)

at System.Windows.FrameworkElement.UpdateThemeStyleProperty()

at System.Windows.FrameworkElement.OnInitialized(EventArgs e)

at Telerik.Windows.Controls.Docking.RadGridResizer.OnInitialized(EventArgs e) in c:\TB\102\WPF_Scrum\Release_WPF\Sources\Development\Controls\Docking\Docking\Parts\RadGridResizer.cs:line 360

at MS.Internal.Xaml.Runtime.ClrObjectRuntime.InitializationGuard(XamlType xamlType, Object obj, Boolean begin)

at System.Xaml.XamlObjectWriter.Logic_EndInit(ObjectWriterContext ctx)

at System.Xaml.XamlObjectWriter.WriteEndObject()

at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlReader templateReader, XamlObjectWriter currentWriter)

at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlObjectWriter objectWriter)

at System.Windows.FrameworkTemplate.LoadOptimizedTemplateContent(DependencyObject container, IComponentConnector componentConnector, IStyleConnector styleConnector, List`1 affectedChildren, UncommonField`1 templatedNonFeChildrenField)

at System.Windows.FrameworkTemplate.LoadContent(DependencyObject container, List`1 affectedChildren)

at System.Windows.StyleHelper.ApplyTemplateContent(UncommonField`1 dataField, DependencyObject container, FrameworkElementFactory templateRoot, Int32 lastChildIndex, HybridDictionary childIndexFromChildID, FrameworkTemplate frameworkTemplate)

at System.Windows.FrameworkTemplate.ApplyTemplateContent(UncommonField`1 templateDataField, FrameworkElement container)

at System.Windows.FrameworkElement.ApplyTemplate()

at System.Windows.FrameworkElement.MeasureCore(Size availableSize)