合并资源字典 [英] Merging Resources Dictionaries

问题描述

我在尝试代码合并WPF资源字典落后，但对于一些reasion这是行不通的。如果我尝试合并它的运行实例文档本身的字典：

i'm trying merging wpf resource dictionaries on the code behind but for some reasion this isn't working. If i try merge the dictionaries on the document itself it's running for instance:

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApplication212;assembly=WpfApplication212">

<ResourceDictionary.MergedDictionaries>
    <ResourceDictionary Source="Theme.xaml"></ResourceDictionary>
</ResourceDictionary.MergedDictionaries>

<Style TargetType="{x:Type local:URComboBox}" BasedOn="{StaticResource ComboBoxStyle}">
</Style>

这是工作，但如果我评论的ResourceDictionary.MergedDictionaries和代码试试这个：

This is working, but if i comment the ResourceDictionary.MergedDictionaries and in code try this:

ResourceDictionary skin = new ResourceDictionary();
skin.Source = styleLocation;
ResourceDictionary skinFather = new ResourceDictionary();
skinFather.MergedDictionaries.Add(skin);
skinFather.Source = styleLocationFather;

这将打破，因为无法找到资源。

This will break because can't find the resource.

推荐答案

您不能使用Source属性从代码中加载资源词典。

You can't use the Source property to load a Resource Dictionary from code.

从的 MSDN ：

合并字典可以通过代码被添加到一个资源字典。在默认情况下，存在的任何资源属性初始为空ResourceDictionary中也有一个默认的，初始为空MergedDictionaries集合属性。要添加通过代码合并字典，你得到一个参考所需的主要ResourceDictionary中，获得其MergedDictionaries属性值，并调用添加对包含在MergedDictionaries泛型集合。您添加的对象必须是一个新的ResourceDictionary，在代码中，您没有设置源属性。相反，你必须获得通过创建一个或加载到加载现有的ResourceDictionary调用XamlReader.Load对具有的ResourceDictionary根，则铸造XamlReader.Load返回值的ResourceDictionary现有的XAML文件流之一。其中一个方式的ResourceDictionary对象。

"Merged dictionaries can be added to a Resources dictionary through code. The default, initially empty ResourceDictionary that exists for any Resources property also has a default, initially empty MergedDictionaries collection property. To add a merged dictionary through code, you obtain a reference to the desired primary ResourceDictionary, get its MergedDictionaries property value, and call Add on the generic Collection that is contained in MergedDictionaries. The object you add must be a new ResourceDictionary. In code, you do not set the Source property. Instead, you must obtain a ResourceDictionary object by either creating one or loading one. One way to load an existing ResourceDictionary to call XamlReader.Load on an existing XAML file stream that has a ResourceDictionary root, then casting the XamlReader.Load return value to ResourceDictionary."

因此，一些伪代码：

ResourceDictionary myResourceDictionary = XamlReader.Load(someXamlStreamReader);
anotherResourceDictionary.MergedDictionaries.Add(myResourceDictionary);

的下面是另一个例子如何做到这一点：

Uri uri = new Uri("/PageResourceFile.xaml", UriKind.Relative);
StreamResourceInfo info = Application.GetResourceStream(uri);
System.Windows.Markup.XamlReader reader = new System.Windows.Markup.XamlReader();
Page page = (Page)reader.LoadAsync(info.Stream);

这篇关于合并资源字典的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！