.NET Core-框架“ DNXCore，Version = v5.0”的参考程序集找不到 [英] .NET Core - The reference assemblies for framework "DNXCore,Version=v5.0" were not found

问题描述

将.NET核心库（DNXCore50）从VS 2015迁移到VS 2017时出现此错误。

I'm getting this error when migrating a .NET core lib (DNXCore50) from VS 2015 to VS 2017.

找不到框架 DNXCore ，版本= v5.0的程序集。

The reference assemblies for framework "DNXCore,Version=v5.0" were not found.

我的项目文件当前看起来像这样：（在VS 2017迁移向导将我的 project.json迁移到.csproj文件之后）

My project file currently looks like this: (after the VS 2017 migration wizard migrated my "project.json" to a .csproj file)

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

  <PropertyGroup>
    <Description>An FTP and FTPS library for .NET, optimized for speed. Provides extensive FTP commands, file uploads/downloads, SSL/TLS connections and FTP proxies.</Description>
    <VersionPrefix>16.3.0</VersionPrefix>
    <Authors>J.P. Trosclair;Harsh Gupta</Authors>
    <TargetFrameworks>netstandard1.6;dnxcore50</TargetFrameworks>
    <DefineConstants>$(DefineConstants);CORE</DefineConstants>
    <RootNamespace>FluentFTP</RootNamespace>
    <AssemblyName>FluentFTP</AssemblyName>
    <OutputType>Library</OutputType>
    <PackageId>FluentFTP</PackageId>
    <NetStandardImplicitPackageVersion>1.6.0</NetStandardImplicitPackageVersion>
    <TargetFrameworkIdentifier>DNXCore</TargetFrameworkIdentifier>
    <TargetFrameworkVersion>v5.0</TargetFrameworkVersion>
    <GenerateAssemblyTitleAttribute>false</GenerateAssemblyTitleAttribute>
    <GenerateAssemblyDescriptionAttribute>false</GenerateAssemblyDescriptionAttribute>
    <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute>
    <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
    <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
    <GenerateAssemblyCopyrightAttribute>false</GenerateAssemblyCopyrightAttribute>
    <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
    <GenerateNeutralResourcesLanguageAttribute>false</GenerateNeutralResourcesLanguageAttribute>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="System.IO" Version="4.3.0.0" />
    <PackageReference Include="System.Net.NameResolution" Version="4.3.0.0" />
    <PackageReference Include="System.Net.Sockets" Version="4.3.0.0" />
    <PackageReference Include="System.Net.Security" Version="4.3.0.0" />
  </ItemGroup>

</Project>

编译时出现上述错误。我尝试过的事情：

I'm getting the above mentioned error when I compile. Things I've tried:

• 改为使用 .NETPortable v5.0 。


• 改为使用 .NETCoreApp v1.0 。每堂课都缺。我是否使用了错误的版本？


• 使用 DNXCore 。没有缺课。 VS只是一个错误。

• Using .NETPortable v5.0 instead. Too many missing classes here.
• Using .NETCoreApp v1.0 instead. Every class is missing. Did I use a wrong version?
• Using DNXCore. No missing classes. Just one error from VS.

我应该使用什么代替DNXCore 5.0？我需要最新的API，例如 TlsStream 和 Uri ，不存在这些东西，或者有没有办法强制编译器进行编译？请注意，当我使用VS 2015进行编译时，这是一个工作库。现在，我切换到VS 2017，现在无法再编译我的项目了！在.NET Core或.NET Portable中。

What should I use instead of DNXCore 5.0? I need the latest APIs like TlsStream and Uri, stuff not present Or is there a way to force the compiler to compile? Please note this was a working library when I used VS 2015 to compile. Now that I've switched to VS 2017 I cannot compile my project anymore! in either .NET Core or .NET Portable.

推荐答案

好吧，这真令人惊讶！

我的库已成功使用 .NETStandard v1.6 编译！！

My lib successfully compiled with .NETStandard v1.6!

在此处包含我的XML以防其他人遇到此问题：

Including my XML here in case anyone else has this issue:

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

  <PropertyGroup>
    <Description>An FTP and FTPS library for .NET, optimized for speed. Provides extensive FTP commands, file uploads/downloads, SSL/TLS connections and FTP proxies.</Description>
    <VersionPrefix>16.3.0</VersionPrefix>
    <Authors>J.P. Trosclair;Harsh Gupta</Authors>
    <TargetFrameworks>netstandard1.6;dnxcore50</TargetFrameworks>
    <DefineConstants>$(DefineConstants);CORE</DefineConstants>
    <RootNamespace>FluentFTP</RootNamespace>
    <AssemblyName>FluentFTP</AssemblyName>
    <OutputType>Library</OutputType>
    <PackageId>FluentFTP</PackageId>
    <NetStandardImplicitPackageVersion>1.6.0</NetStandardImplicitPackageVersion>
    <TargetFrameworkIdentifier>.NETStandard</TargetFrameworkIdentifier>
    <TargetFrameworkVersion>v1.6</TargetFrameworkVersion>
    <GenerateAssemblyTitleAttribute>false</GenerateAssemblyTitleAttribute>
    <GenerateAssemblyDescriptionAttribute>false</GenerateAssemblyDescriptionAttribute>
    <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute>
    <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
    <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
    <GenerateAssemblyCopyrightAttribute>false</GenerateAssemblyCopyrightAttribute>
    <GenerateAssemblyVersionAttribute>false</GenerateAssemblyVersionAttribute>
    <GenerateNeutralResourcesLanguageAttribute>false</GenerateNeutralResourcesLanguageAttribute>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="System.IO" Version="4.3.0.0" />
    <PackageReference Include="System.Net.NameResolution" Version="4.3.0.0" />
    <PackageReference Include="System.Net.Sockets" Version="4.3.0.0" />
    <PackageReference Include="System.Net.Security" Version="4.3.0.0" />
  </ItemGroup>

</Project>

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