相关疑难解决方法(0)

我正在使用C#和来自GalaSoft的MVVM-Light Toolkit编写Windows 8.1 App.

我只有以下代码:

<Application.Resources>
    <vm:ViewModelLocator x:Key="Locator" xmlns:vm="using:Scedule.ViewModel" />

    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="Resource Dictionaries/StandardStyles.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>      
</Application.Resources>

出现错误"每个词典条目必须具有关联的键属性",并且只有在我删除时才会消失

    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="Resource Dictionaries/StandardStyles.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary> 

要么

    <vm:ViewModelLocator x:Key="Locator" xmlns:vm="using:Scedule.ViewModel" />

谁能告诉我这里的问题是什么？