按名称访问的ResourceDictionary [英] Access ResourceDictionary by name

问题描述

可以说，我有我的一些Application.xaml ResourceDictionary中的定义是这样：

Lets say I have some ResourceDictionary's in my Application.xaml defined as so:

<Application>
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary x:Name="brushResources"/>
                <ResourceDictionary x:Name="graphicsResources"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </Application.Resources>
</Application>

我本来认为我可能只是简单地查阅字典后面的代码如下所示：

I would have assumed I could just simply access the dictionary in the code behind like so:

brushResources.MergedDictionaries.Add(someNewBrushes)
graphicsResources.MergedDictionaries.Add(someNewGraphics)

但是，这似乎并不如此，这是错误的做法来处理的ResourceDictionary？我会很喜欢动态加载资源，MEF的能力，这似乎是一个绊脚石给我。

But this does not seem to be the case, is this the wrong approach to dealing with ResourceDictionary? I would really enjoy the ability to dynamically load resources with MEF, and this seems like a stumbling block to me.

修改

固定示例代码显示词典实际上在MergedDictionaries

Fixed example code to show the dictionaries are actually in the MergedDictionaries

推荐答案

既然你无法定义的关键，也不是一个名字对于这样的资源，这里就是你需要做什么：

Since you cannot define a key nor a name for such resource, here's what you need to do:

请你的字典的资源：

加载你的字典，保持对它的引用它做任何你用它做

Load your dictionary, keep a reference to it and do whatever you have to do with it.

// Load the dictionary
ResourceDictionary resourceDictionary = null;
var resourceStream = Application.GetResourceStream(new Uri("ResourceDictionary1.xaml", UriKind.Relative));
if (resourceStream != null && resourceStream.Stream != null)
{
    using (XmlReader xmlReader = XmlReader.Create(resourceStream.Stream))
    {
        resourceDictionary = XamlReader.Load(xmlReader) as ResourceDictionary;
    }
}

然后将其添加到应用程序：

Then add it to your application :

// Merge it with the app dictionnaries
App.Current.Resources.MergedDictionaries.Add(resourceDictionary);

（从文档的合并资源字典）

这正是复制了原行为，但现在你可以查阅字典。

This exactly replicates the original behavior but now you can access the dictionary.

有关设计时，你肯定会想有在XAML中声明的字典，你可以在运行做什么那么的默认行为 - 时间是删除所有的词典，用上述方法重新加载它们。

For design-time you will certainly want the default behavior of having the dictionaries declared in XAML, what you can do then at run-time is to delete all the dictionaries and reload them using the above method.

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