macos - Visual Studio Mac 与 dotnet core 2 不兼容

Question

我一直在使用 Visual Studio Mac 一段时间，并且刚刚将其更新到发布版本。我还下载并安装了 .NET Core 2.0 Preview 1。从 shell 提示我可以生成一个新的 Web API 项目:

dotnet2 davec$ dotnet --version
2.0.0-preview1-005977
dotnet2 davec$ dotnet new webapi
The template "ASP.NET Core Web API" was created successfully.
This template contains technologies from parties other than Microsoft, see https://aka.ms/template-3pn for details.

Processing post-creation actions...
Running 'dotnet restore' on dotnet2/dotnet2.csproj...
Restore succeeded.

我可以从 shell 构建和运行该项目。但是当我在 Visual Studio for Mac 中打开它时，IDE 尝试并无法恢复:

Errors in dotnet2/dotnet2.csproj
    Unable to resolve 'Microsoft.NETCore.App (>= 2.0.0)' for '.NETCoreApp,Version=v2.0'.
    Unable to resolve 'Microsoft.NETCore.App (>= 2.0.0)' for '.NETCoreApp,Version=v2.0 (win)'.
    Unable to resolve 'Microsoft.NETCore.App (>= 2.0.0)' for '.NETCoreApp,Version=v2.0 (win-x64)'.
    Unable to resolve 'Microsoft.NETCore.App (>= 2.0.0)' for '.NETCoreApp,Version=v2.0 (win-x86)'.

NuGet Config files used:
    ~/.config/NuGet/NuGet.Config

Feeds used:
    https://api.nuget.org/v3/index.json
Restore failed for 'Microsoft.NETCore.App (>= 2.0.0)'.
Restore failed.

Answer 1

为了完整起见，在@jmoerdyk 的评论之后记录答案:

我的环境:
MacOSX 10.12.4
dotnet 版本:2.0.0-preview1-005977

在文本编辑器(vi、TextEdit、VS Code)中打开 csproj 文件

修改 Target framework 和 RuntimeFrameworkVersion 为:

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

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.0</TargetFramework>
    <RuntimeFrameworkVersion>2.0.0-preview1-002111-00</RuntimeFrameworkVersion>
  </PropertyGroup>

</Project>

运行 nuget restore，构建项目，你应该很高兴