Loading resourceDictionary with c# in Silverlight 5

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I am working on a project that based on Silverlight 5.
I want to load a resourcceDictionary by c# code.
For this work, I am using this code.

C#

var url = new Uri(@"pack://application/PIPM2.MainVisual;component/"
                               + "Theme/Red.xaml", UriKind.Absolute);
            Application.Current.Resources.MergedDictionaries.Add(new ResourceDictionary() { Source = url });

But I got this error =>

Error HRESULT E_FAIL has been returned from a call to a COM component.

Stack Trace =>

at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.SetValue(IManagedPeerBase obj, DependencyProperty property, String s)
at MS.Internal.XcpImports.SetValue(IManagedPeerBase doh, DependencyProperty property, Object obj)
at System.Windows.DependencyObject.SetObjectValueToCore(DependencyProperty dp, Object value)
at System.Windows.DependencyObject.SetEffectiveValue(DependencyProperty property, EffectiveValueEntry& newEntry, Object newValue)
at System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
at System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet, Boolean isBindingInStyleSetter)

How can I solve this problem ?
If you have better way to load resourceDictionary, please give me it.

Posted 30-Nov-12 18:31pm

mohammadghaderian.bp

Updated 30-Nov-12 21:26pm

André Kraak

v2

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Akash Detroja · Accepted Answer · 2012-12-01T01:17:00

Please try below code and Set your file's property (Right click on that file)
1) Build Action : Content
2) Copy to Output directory: Copy if newer

C#

ResourceDictionary rd = new ResourceDictionary();
rd.Source = new Uri("/Theme/Red.xaml", UriKind.RelativeOrAbsolute);
App.Current.Resources.MergedDictionaries.Clear();
App.Current.Resources.MergedDictionaries.Add(rd);

Thanks

Akash