.Net 标准 DLL 项目的构建文件夹中缺少 Nuget Pkg Dll.dll 不是复制本地的吗?在 Visual Studio 2019 中修复? [英] Nuget Pkg Dlls Missing from Build Folder in .Net Standard DLL Project. dlls are Not Copy Local? Fix in Visual Studio 2019?

问题描述

我有 Visual Studio 2019 社区版

I have Visual Studio 2019 Community Edition

重现步骤:

我加载了 VS 并启动了一个全新的 C# .Net 标准库项目.我转到 Nuget Pkg Manager 并安装 ANY nuget 包.我向 Class1.cs 添加一行以使用包中的类型.

I load up VS and start a brand new C# .Net Standard Library project. I go to Nuget Pkg Manager and install ANY nuget package. I add a single line to Class1.cs to use a Type from the package.

例如，如果我安装 WatsonTCP nuget 包，我会将 Class1.cs 更改为如下所示:

For instance, if I install WatsonTCP nuget package, I change Class1.cs to look like this:

using System;
using WatsonTcp;

namespace NugetTest
{
    public class Class1
    {
        public Class1()
        {
            WatsonTcpClient client = new WatsonTcpClient("", 0);
        }
    }
}

我点击了重建解决方案.我检查了 bin/Debug 文件夹，没有 nuget 包的 dll 存在.与发布版本的 bin/Release 相同.

I hit Rebuild Solution. I check the bin/Debug folder and none of the dlls for the nuget package are there. Same thing with bin/Release for a Release build.

我已经尽可能多地解决了 SO 问题.我已阅读有关 nuget 的 MSDN 文档.

I have poored through as many SO issues as I can. I've read the MSDN documentation on nuget.

我将构建和运行 MSBuild 设置设置为详细.在构建日志中，我看到类似以下输出对于每个单独的 dll:

I set Build and Run MSBuild settings to Detailed. In the build log, I see something like the following output for every single dll:

Primary reference "WatsonTcp, Version=2.0.7.0, Culture=neutral, PublicKeyToken=null".
Resolved file path is "C:UsersJames.nugetpackageswatsontcp2.0.7lib
etstandard2.0WatsonTcp.dll".
Reference found at search path location "{HintPathFromItem}".
This reference is not "CopyLocal" because at least one source item had "Private" set to "false" and no source items had "Private" set to "true".

我猜这个关于 CopyLocal 的通知是 build 文件夹中没有输出任何内容的原因.但我不是 100% 确定.

I'm guessing this notice about CopyLocal is the reason nothing is being output in the build folder. But I'm not 100% sure.

SO 主要包含与 .Net Core 和 .Net Standard 之前的包参考"时代相关的旧问题.因此，每当我搜索与CopyLocal"有关的问题时，我都会获得有关在 DLL 引用上显式设置 CopyLocal 属性的信息.通过包参考和 RAR 系统自动确定 CopyLocal，我没有发现任何有助于解决我的问题.

SO mostly contains older questions that pertain to the pre-"package reference" era before .Net Core and .Net Standard. As a result, any time I search for issues pertaining to "CopyLocal", I get information on setting the CopyLocal property explicitly on a DLL Reference. I'm not finding anything helpful to fix my issue with automatic determination of CopyLocal by the Package Reference and RAR system.

有人可以帮忙吗?

推荐答案

打开你的 xx.csproj(在 VS 中，在解决方案资源管理器中双击项目名称，或右键单击project=>unload=>edit...) 并将 CopyLocalLockFileAssemblies 属性添加到其中，将其值设置为 true 它将从nuget 包在构建过程中输出到文件夹.

Open your xx.csproj(In VS, double-click the project name in Solution explorer, or right-click project=>unload=>edit...) and add the CopyLocalLockFileAssemblies property into it, set its value to true and it will copy all your assemblies from nuget packages to output folder during build process.

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <!--Add this line-->
    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
  </PropertyGroup>

如果您的项目中有太多 nuget 包而您只想要其中的一部分，请尝试使用 PrivateAssets="All" 来防止 VS 将指定的包复制到输出文件夹.

And if you have too many nuget packages in your project and you only want part of them, try using PrivateAssets="All" to prevent VS from copying the specified one to output folder.

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
    <!--Add this line to copy everything.-->
    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="log4net" Version="2.0.8" />
    <PackageReference Include="Newtonsoft.Json" Version="12.0.3-beta1" />
    <PackageReference Include="WatsonTcp" Version="2.0.7" PrivateAssets="All"/>
  </ItemGroup>

例如:使用上面的脚本将把 log4net 和 NewTonSoft.Json 而不是 WatsonTcp 复制到输出文件夹.更多详情请参考github/dotnet/sdk#2235.

Eg: Using script above will copy log4net and NewTonSoft.Json but not WatsonTcp to output folder. More details refer to github/dotnet/sdk#2235.

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