如何从C＃添加到F＃便携式库的引用便携式类库（PCL） [英] How do I add a reference to F# Portable Library from C# Portable Class Library (PCL)

问题描述

我有一个包含两个F＃项目中，我想写一些的xUnit测试C＃项目一期工程：

• FS_PL：F＃3.1（3.3.1.0）便携式图书馆


• FS_PL_Legacy：F＃31（2.3.5.1）便携式图书馆（传统）


• 测试： C＃.NET 4.5 / Win8的C＃便携式类库（PCL）

我无法从测试添加引用无论是F＃的库。

当我尝试添加到FS_PL一个参考，我提出了一个对话框，指出无法引用添加到项目'FS_PL'的目标便携式库项目FS_PL是不一样的，或与当前的便携式库项目的目标兼容：

这是奇怪，因为我的测试和FS_PL库都被配置为针对.NET 4.5和放大器; Windows 8的。

因此，我创建FS_PL_Legacy并尝试添加对它的引用。这样做让我非常的'有用'的消息，指出无法添加引用到项目'FS_PL_Legacy'：

有谁知道我做错了？

部分解决方法＃1

从的 a连接问题，讨论这个问题，我增加了以下到C＃项目：

 <&的ItemGroup GT; ！
<  - 手动添加引用F＃项目要克服的问题在这里讨论：
 http://stackoverflow.com/questions/23111782/how-do-i-add-a-reference-to -f便携库 - 从-C锋利便携类溴化锂
  - > 
< ProjectReference包括=.. \FS_PL\FS_PL.fsproj> 
<项目> {2c4b1776-3d34-4534-8520-8a1e6daa0e6e}< /项目> 
<名称>&FS_PL LT; /名称> 
< / ProjectReference> 
< ProjectReference包括=.. \FS_PL_Legacy\FS_PL_Legacy.fsproj> 
<项目> {0d7b657c-906B-4448-ae64-2153a1fa910c}< /项目> 
<名称>&FS_PL_Legacy LT; /名称> 
< / ProjectReference> 
< /&的ItemGroup GT; 
  

这至少可以让VS引用F＃项目，但这些项目的标签发出多次警告和C＃便携式库无法建立，因为它不能引用类型中的一个或两个F＃库：（

大多数生成输出窗口中的警告表明，因为他们似乎有关于框架组件的间接依赖F＃库不能被引用[的System.Threading / System.Lync的/ etc。]这可能不是当前目标框架内解决。

解决方案

问你们要被听到... ...

与唐赛姆和一些F＃团队的微博这个问题。他们证实这是一个问题，他们认为通过释放过程工作的方式修复。

我安装的今天的Visual F＃每日构建，我可以证实，这个问题已经解决了！

由于唐和F＃团队解决这个问题 - 现在我可以将新的F＃代码到我主要是C＃代码库和放大器;测试套件......，并开始与远不如F＃代码替换我们系统的大块比同等的C＃;）

I have a project which contains two F# projects and a C# project in which I'd like to write some XUnit tests:

• FS_PL: F# 3.1 (3.3.1.0) Portable Library
• FS_PL_Legacy: F# 31. (2.3.5.1) Portable Library (Legacy)
• Tests: C# .NET 4.5/Win8 C# Portable Class Library (PCL)

I am unable to add a reference from Tests to either of the F# libraries.

When I try to add a reference to FS_PL, I am presented with a dialog that states "Unable to add a reference to project 'FS_PL'. The targets of Portable Library project 'FS_PL' are not the same or compatible with the targets of the current Portable Library project":

This is odd since both my Tests and FS_PL libraries are configured to target .NET 4.5 & Windows 8.

So I created FS_PL_Legacy and tried adding a reference to it. Doing so gives me a very 'helpful' message stating "Unable to add a reference to project 'FS_PL_Legacy'":

Does anyone know what I am doing wrong?

Partial Workaround #1

Using miegirl's workaround from a Connect issue discussing this problem, I added the following to the C# project:

<ItemGroup>
    <!-- Manually added reference to F# projects to overcome issue discussed here:
            http://stackoverflow.com/questions/23111782/how-do-i-add-a-reference-to-f-portable-library-from-c-sharp-portable-class-libr
        -->
    <ProjectReference Include="..\FS_PL\FS_PL.fsproj">
        <Project>{2c4b1776-3d34-4534-8520-8a1e6daa0e6e}</Project>
        <Name>FS_PL</Name>
    </ProjectReference>
    <ProjectReference Include="..\FS_PL_Legacy\FS_PL_Legacy.fsproj">
        <Project>{0d7b657c-906b-4448-ae64-2153a1fa910c}</Project>
        <Name>FS_PL_Legacy</Name>
    </ProjectReference>
</ItemGroup>

This at least allows VS to reference the F# projects, but those projects are tagged with several warnings and the C# portable library is unable to build as it cannot reference the types in one or both of the F# libraries :(

Most of the warnings in the build output window indicate that the F# libraries cannot be referenced as they appear to have "an indirect dependency on the framework assembly "[System.Threading/System.Lync/etc.]" which could not be resolved in the currently targeted framework"

解决方案

Ask and ye shall be heard ...

I raised this issue on Twitter with Don Syme and some of the F# team. They confirmed that it was an issue they had a fix that was working its way through the release process.

I installed today's Visual F# daily build and I can confirm that this issue has been resolved!

Thanks to Don and the F# team for fixing this issue - I can now incorporate new F# code into my predominantly C# codebase & test suite ... and begin replacing chunks of our system with FAR less F# code than the equivalent C# ;)

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