dotnet build on cmd vs VS2017 的区别在哪里? [英] Where is the difference of dotnet build on cmd vs VS2017?

问题描述

背景

一个简单的 dotnet core 2.0 项目依赖于 Xamarin.Forms (2.3.4.270).

A simple dotnet core 2.0 project has a dependency to Xamarin.Forms (2.3.4.270).

当我在 Visual Studio 2017 (15.3) 中构建项目时，构建成功.在命令行上运行 dotnet build 时失败并出现以下错误:

When I build the project in Visual Studio 2017 (15.3) then the build succeeds. When running dotnet build on the command line it fails with the following error:

C:Userssteph.nugetpackagesxamarin.forms2.3.4.270uildportable-win+net45+wp80+win81+wpa81+MonoAndroid10+Xamarin.iOS10+xamarinmac20Xamarin.Forms.targets(40,3):错误 MSB4062:Xamarin.Forms.Build.Tasks.FixedCreateCSharpManifestResourceName"任务无法从程序集中加载C:Userssteph.nugetpackagesxamarin.forms2.3.4.270uildportable-win+net45+wp80+win81+wpa81+MonoAndroid10+Xamarin.iOS10+xamarinmac20Xamarin.Forms.Build.Tasks.dll.无法加载文件或程序集Microsoft.Build.Utilities.v4.0，版本=4.0.0.0，文化=中性，PublicKeyToken=b03f5f7f11d50a3a'.该系统找不到指定的文件.确认声明是正确的，即大会及其所有依赖项可用，并且任务包含公共类实现 Microsoft.Build.Framework.ITask.[C:UsersstephDocumentsBitbucket ime-stamp-coreTimeStamp.Core.ViewsTimeStamp.Core.Views.csproj]

C:Userssteph.nugetpackagesxamarin.forms2.3.4.270uildportable-win+net45+wp80+win81+wpa81+MonoAndroid10+Xamarin.iOS10+xamarinmac20Xamarin.Forms.targets(40,3): error MSB4062: The "Xamarin.Forms.Build.Tasks.FixedCreateCSharpManifestResourceName" task could not be loaded from the assembly C:Userssteph.nugetpackagesxamarin.forms2.3.4.270uildportable-win+net45+wp80+win81+wpa81+MonoAndroid10+Xamarin.iOS10+xamarinmac20Xamarin.Forms.Build.Tasks.dll. Could not load file or assembly 'Microsoft.Build.Utilities.v4.0, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified. Confirm that the declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask. [C:UsersstephDocumentsBitbucket ime-stamp-coreTimeStamp.Core.ViewsTimeStamp.Core.Views.csproj]

因此，无论出于何种原因，Microsoft.Build.Utilities.v4.0 都丢失了.正如您在上面的屏幕截图中看到的那样，我已经尝试添加构建实用程序，但没有成功.无论是否添加了 Build Core，我都会得到相同的结果.

So for whatever reason Microsoft.Build.Utilities.v4.0 is missing. As you can see in the screenshot above I already tried to add the build utilities as well, without success. Independent on whether Build Core is added or not I'm getting the same result.

.csproj 文件:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netstandard2.0</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Build.Utilities.Core" Version="15.3.409" />
    <PackageReference Include="Xamarin.Forms" Version="2.3.4.270" />
  </ItemGroup>

</Project>

问题

1. dotnet build 和 Visual Studio 2017 构建此类项目的区别在哪里?我一直觉得VS2017也只是调用dotnet build.
2. 我该如何解决这个问题?

1. Where is the difference betweend dotnet build and Visual Studio 2017 for building such kind of project? I've been under the impression that VS2017 also just calls dotnet build.
2. How can I fix this?

推荐答案

此版本的 Xamarin.Forms 表单包含无法在 .NET Core 版本的 MSBuild 上加载的构建任务，这就是您需要使用MSBuild 的完整框架版本(包含在 VS 中).

This version of the Xamarin.Forms forms contains a build task that cannot be loaded on the .NET Core version of MSBuild, which is why you need to use the full framework version of MSBuild (included in VS).

在 这个 GitHub 问题上有一些关于这个包的讨论.

There is some discussion about this package on this GitHub issue.

如果包含 MSBuild 任务的包不是专门为支持 .NET Core 和 .NET Framework MSBuild 而设计的，则可能会发生这些错误.

If a package containing MSBuild tasks is not specifically authored to support both .NET Core and .NET Framework MSBuild, these errors are likely to occur.

这篇关于dotnet build on cmd vs VS2017 的区别在哪里?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！