WPF關於Generic.xaml

如果需要用到Themes/Generic.xaml作為默認風格資源文件，不要忘了該項目的AssemblyInfo.cs中必須要有以下這段：

[assembly: ThemeInfo(
    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
    //(used if a resource is not found in the page, 
    // or application resource dictionaries)
    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
    //(used if a resource is not found in the page, 
    // app, or any theme specific resource dictionaries)
)]

否則，程序將自動取當前操作系統風格。

這段沒有的原因很可能是WPF項目是從別處拷來而不是直接在vs里創建的。