是否可以为静态资源动态创建 ResourceKey?(例如使用绑定) [英] Is it possible to dynamically create a ResourceKey for a StaticResource? (eg using a Binding)

问题描述

假设我要绑定的对象有一个属性，该属性带有一个表示 ResourceKey 的字符串 - 我如何根据与底层对象的绑定让 StaticResource 动态获取它的 ResourceKey?

Suppose the object I'm binding to has a property with a string representing the ResourceKey - how do I get a StaticResource to dynamically acquire it's ResourceKey based on a binding to the underlying object?

我想要与此相同的东西

MyProperty="{StaticResource ResourceKey={Binding Path=MyProperty}}"

编译时，它会失败，抱怨找不到 System.Windows.Data.Binding 类型的键

While this compiles, it will fail complaining it can't find a key of type System.Windows.Data.Binding

如果基础值发生变化(例如 DynamicResource)，我不需要动态重新评估

I don't need dynamic re-evaluation if the underlying value changes (eg DynamicResource)

推荐答案

我在这里找到了我想要的东西:

I found exactly what I was looking for here:

http://blog.functionalfun.net/2009/12/specifying-resource-keys-using-data_31.html

这是一个自定义标记扩展，其行为类似于常规绑定，但 Path 将指向将目标转换为 ResourceKey 的属性，然后绑定将返回资源！

It's a custom markup extension that behaves like a regular binding but the Path will point to a property that transforms the target into a ResourceKey and the binding will then return the resource!

我发现这非常有用！

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