如何在用户控件库中访问XAML中的资源图像？ [英] How can I access a resource image within XAML in a user control library?

问题描述

我正在编写一个WPF用户控件库，但我正在尝试通过某些XAML访问资源映像。只是为了好玩，图像在设计时按预期显示，并且仅在运行时失败。

I'm writing a library of WPF user controls and am having trouble with a resource image that I'm trying to access via some XAML. Just for fun, the image displays as expected at design time and only fails at run time.

我已尝试将构建操作设置为无，内容 ，资源和嵌入资源，但我不断得到以下神秘异常：

I've tried setting the build action to "none", "content", "resource" and "embedded resource", but I keep getting the following cryptic exception:

'提供
'的价值System.Windows.Baml2006.TypeConverterMarkupExtension'抛出
异常。'行号'18'和行位置'6'。

'Provide value on 'System.Windows.Baml2006.TypeConverterMarkupExtension' threw an exception.' Line number '18' and line position '6'.

查看内部异常，它似乎是包URI的问题。当我尝试：

Looking at the inner exception, it seems to be a problem with the pack URI. When I try:

<ImageBrush x:Key="mybrush" ImageSource="pack://application:,,,/Resources/an image.png" />

我得到：

Assembly.GetEntryAssembly（）返回null。

Assembly.GetEntryAssembly() returns null.

好的，所以这可能是因为我的库现在是从内部调用的另一个集会。但是，当我按照建议并尝试：

OK, so this is probably because my library is now being called from within another assembly. But when I follow the recommendations and try:

<ImageBrush x:Key="mybrush" ImageSource="pack://application:,,,my_assembly;component;/Resources/an image.png" />

我得到一个内部例外：

无法识别URI前缀。

"The URI prefix is not recognized."

为了增加乐趣，我有另一张图片通过实际的C＃代码访问我没有问题的资源（即不通过XAML）。

To add to the fun, I have another image resource which I have no problem accessing via actual C# code (i.e. not through XAML).

我做错了什么？感觉它会非常简单，但我现在正在寻找头脑。

What am I doing wrong? Feel like it will be really simple, but am head-desking at the moment.

推荐答案

将ImageSource更改为

Change ImageSource to

ImageSource="pack://application:,,,/my_assembly;component/Resources/your_image.p‌​ng"

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