WPF编译错误“IDictionary must have a Key attribute" [英] WPF compile error "IDictionary must have a Key attribute"

问题描述

我已经创建了要在 WPF 应用程序中的多个 xaml 页面中使用的控件样式.为此，我创建了一个 Resources.xaml 并在其中添加了样式.

I've created control styles I want to use among multiple xaml pages in my WPF app. To do this I created a Resources.xaml and added the styles there.

然后在我的页面中添加此代码

Then in my pages I add this code

<Grid.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="pack://application:,,,/SampleEventTask;component/Resources.xaml" />
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</Grid.Resources>

在两页上这工作正常，但在第三页上我收到一个编译错误:

On two pages this works fine, but on the 3rd page I get a compile error that says:

添加到 IDictionary 的所有对象必须有一个 Key 属性或一些关联的其他类型的密钥

All objects added to an IDictionary must have a Key attribute or some other type of key associated with them.

如果我为此添加一个键，例如 ResourceDictionary x:Key="x"，那么编译错误会继续，但在运行应用程序时，它会错误地找到样式.

If I add a key to this, as such ResourceDictionary x:Key="x", then the compile error goes but on running the app it errors finding the style.

我可以使编译错误消失，并通过将原始(未指定键)ResourceDictionary"xaml 从顶级网格移动到该页面上包含的网格来运行应用程序.

I can make the compile error go away and have the app run by just moving original (no key specified) "ResourceDictionary" xaml from the top level Grid into a contained Grid on that page.

但我不明白这里发生了什么.关于问题是什么的任何建议，我只是遗漏了一些东西或做错了一些事情.有没有更好的方式分享样式?

But I don't understand what is going on here. Any suggestions as to what the problem is, I'm just missing something or doing something incorrectly. Is there a better way to share styles?

谢谢

推荐答案

在该页面中除了合并的 ResourceDictionary 之外，是否还定义了任何其他资源?

Are there any other resources defined other than the merged ResourceDictionary in that Page?

例如，这是我创建的一个窗口的片段.

For example, here's a snippet from a Window I created.

<Window x:Class="SelectionPagePrototype.SelectionPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:SelectionPagePrototype"
    Title="SelectionPage" MinHeight="600" MinWidth="800" Loaded="OnLoaded">
    <Window.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="ImageResourceDictionary.xaml" />
            </ResourceDictionary.MergedDictionaries>
            <local:QuickPickCheckedConverter x:Key="quickPickConverter" />
            <local:BoolToCaptionConverter x:Key="captionConverter" />
            <local:ProductAndImageTypeConverter x:Key="imageConverter" />
        </ResourceDictionary>
    </Window.Resources>
    <Grid> ...

合并后的字典不需要键，但该窗口的其他资源需要.

The merged dictionary did not require a key, but the other resources for that Window do.

这篇关于WPF编译错误“IDictionary must have a Key attribute"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！