的Silverlight 3 - 更改合并字典动态

Question

您好，如何去从：

<Application 
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
x:Class="teste.App"> 
<Application.Resources> 
    <!-- Resources scoped at the Application level should be defined here. --> 
    <ResourceDictionary> 
    <ResourceDictionary.MergedDictionaries> 
    **<ResourceDictionary Source="Green.xaml"/>** 
    </ResourceDictionary.MergedDictionaries> 
    </ResourceDictionary> 
</Application.Resources> 
</Application> 

要：

<Application 
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
x:Class="teste.App"> 
<Application.Resources> 
    <!-- Resources scoped at the Application level should be defined here. --> 
    <ResourceDictionary> 
    <ResourceDictionary.MergedDictionaries> 
    **<ResourceDictionary Source="Blue.xaml"/>** 
    </ResourceDictionary.MergedDictionaries> 
    </ResourceDictionary> 
</Application.Resources> 
</Application> 

动态，当用户选择主题...难道可能？ 谢谢 Josi

Answer 1

你可以改变资源字典动态后面的代码中，在page.xaml的负荷：

应用：

//Load in resources either from application 
     ResourceDictionary dictionary = Application.Current.Resources as ResourceDictionary; 

然后，一旦你拥有的资源字典，你可以使用简单的逻辑来应用它：

//Load in xaml 
     if (user1) 
      themefile = @"[Assembly];component/Themes/blue.xaml"; 
     else 
      themefile = @"[Assembly];component/Themes/green.xaml"; 

注：[Assembly]是n xaml文件存在的组件的amespace。

然后将其合并到dictioanry与页：

XDocument xaml = XDocument.Load(themefile); 
ResourceDictionary rd = XamlReader.Load(xaml.ToString()) as ResourceDictionary; 

     dictionary.MergedDictionaries.Add(rd);