Exception when adding ResourceDictonary at runtime

Question

I am trying to develop a way to switch the style of a Windows Phone 7 application depending on the setting. The styles are as follows:

• The main styles are separated and defined in WP7Style_Dark.xaml and WP7Style_Light.xaml
• other styles are declared in Styles.xaml

I use the following code to connect themes in App.xaml.cs:

var dictionaries = Resources.MergedDictionaries;
dictionaries.Clear();
string source = String.Format("/CommonUI;component/Resources/{0}.xaml", value == AppStyleSet.Light ? "WP7Style_Light" : "WP7Style_Dark");
//base styles
var themeStyles = new ResourceDictionary {Source = new Uri(source, UriKind.Relative)};
dictionaries.Add(themeStyles);
var generalStyles = new ResourceDictionary();
generalStyles.Source = new Uri("/CommonUI;component/Resources/Styles.xaml",UriKind.Relative);
dictionaries.Add(generalStyles);

When installing, generalStyles.Source throws an exception (which is a System.Exception message with the message "Unspecified error"). I found that the exception disappears if I release Styles.xaml, but that is not the solution, of course.

What should I do?

Update 2: unscrew the stack trace, here the problem has narrowed:

. , ,

... <Setter Property="Color" Value="{StaticResource HighlightColor}" />

, StaticResource . - ?

Answer 1

, , , , , , URL- Source. , {StaticResource key}, key , .

Xaml Application.GetResourceStream StreamReader. , XamlReader ResourceDictionary. , , , .

, , , Application.Resources .

Answer 2

WP7 Silverlight 3+, , System.Exception, "UnspecifiedError".

, ResourceDictionary, Silverlight3 - .

, .