wpf 加载资源文件

方法一：App.xaml页面上写

<Application x:Class="LanguageChange.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml">
<Application.Resources>

<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="skin/aa.xaml"/>
<ResourceDictionary Source="skin/bb.xaml"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>

</Application.Resources>
</Application>

方法二：后台实现写法

System.Windows.Application.Current.Resources.MergedDictionaries[0] = new ResourceDictionary { Source = new Uri(aa, UriKind.RelativeOrAbsolute) };