在设计时包uri是有效的，但不是在运行时？ [英] At design time pack uri is valid, but not at runtime?

问题描述

我正在将Button的内容设置为图像。它看起来像这样：

I'm setting a Button's content to an Image. It looks something like this:

<Button>
   <Image Source="pack://application:,,,/NavigationImages/nav_up_left.png" />
</Button>

在我的项目中，我有一个名为NavigationImages的子文件夹，在该文件夹中是图像文件nav_up_left.png。

In my project I have a subfolder named NavigationImages and within that folder is the image file nav_up_left.png.

当我查看Designer时，图像出现，但是在运行时我遇到IOException错误，说它找不到资源。

When I view the Designer the image appears, however during runtime I get an IOException error saying it cannot locate the resource.

Build Action设置为Resource。

The Build Action is set to Resource.

实际上，这在一个项目中运作良好。但是，当我将它复制到另一个项目时，它失败了。这似乎是一个非常简单的问题，但我发现自己很难过，准备开始拔头发了。 @ _ @

Actually, this worked fine in one project. But when I copied it over the another project it fails. This seems like an incredibly simple problem, but I find myself stumped and ready to start pulling out hair. @_@

您的意见和建议将不胜感激！

Your thoughts and suggestions will be much appreciated!

推荐答案

<是的，我明白了......有点儿。

Whelp, I figured it out...kinda.

我将xaml代码从输出类型为Windows Application的一个项目复制到另一个输出类型为Class Library的项目。

I copied that xaml code from one project where the output type is Windows Application, to another project where the output type is Class Library.

我当时没有想到它，但显然当输出类型是类库时，包URI需要更改。

I didn't think of it at the time, but apparently when the output type is a Class Library the pack URI needs to change.

因此，而不是pack：// application：,,, / NavigationImages / nav_up_left.png我将其更改为/ ProjectName; component / NavigationImages / nav_up_left.png现在它的工作正常。

So instead of "pack://application:,,,/NavigationImages/nav_up_left.png" I changed it to "/ProjectName;component/NavigationImages/nav_up_left.png" and now it's working just fine.

我不是100％明白为什么这是有效的，而不是前者。我已经阅读了有关包URI的 MSDN文档在WPF中但也许我误解了一些东西。

I'm not 100% clear why this is works and not the former. I've read through the MSDN documentation on pack URIs in WPF but perhaps I misinterpreted something.

如果有人能给我一个很好的解释，为什么我之前的东西在输出类型为Class Library的项目中不起作用，我将不加考虑这个答案。

I'll leave this answer unchecked in the event someone can give me a good explanation why what I previously had doesn't work in a project with output type Class Library.

我可能错过了一些非常简单的事情。 @ _ @

I'm probably missing something really simple. @_@

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