WPF中调用资源字典的方法

　　<Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Resource/ucWindowDictionary.xaml"></ResourceDictionary>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Window.Resources>

然后在后台指定即可

控件名.Style = Resources["样式的Key"] as Style;