面向.net 4.7.1的项目无法引用依赖于.net standard 2.0的NuGet程序包

Question

我有一个针对.net 4.7.1的ASP .Net项目。 我正在尝试添加Microsoft.AspNetCore.DataProtection程序包 （取决于.net标准2.0）。

我以为.net 4.7.1是.net标准2.0的一部分 ，但是当我尝试添加此软件包时，NuGet会告诉我以下内容。

Attempting to gather dependency information for package 'Microsoft.AspNetCore.DataProtection.2.0.2' with respect to project 'IssueCenter.Website', targeting '.NETFramework,Version=v4.7.1'
Gathering dependency information took 239,47 ms
Attempting to resolve dependencies for package 'Microsoft.AspNetCore.DataProtection.2.0.2' with DependencyBehavior 'Lowest'
Resolving dependency information took 0 ms
Resolving actions to install package 'Microsoft.AspNetCore.DataProtection.2.0.2'
Resolved actions to install package 'Microsoft.AspNetCore.DataProtection.2.0.2'
Retrieving package 'Microsoft.AspNetCore.DataProtection 2.0.2' from 'NuGet official package source'.
  GET https://www.nuget.org/api/v2/package/Microsoft.AspNetCore.DataProtection/2.0.2
  OK https://www.nuget.org/api/v2/package/Microsoft.AspNetCore.DataProtection/2.0.2 291ms
Installing Microsoft.AspNetCore.DataProtection 2.0.2.
Install failed. Rolling back...
Package 'Microsoft.AspNetCore.DataProtection.2.0.2' does not exist in project 'IssueCenter.Website'
Package 'Microsoft.AspNetCore.DataProtection.2.0.2' does not exist in folder 'D:\projetos\IssueCenter\DotNet\IssueCenter2.DotNet\packages'
Executing nuget actions took 984,59 ms
Could not install package 'Microsoft.AspNetCore.DataProtection 2.0.2'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.7.1', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.
Time Elapsed: 00:00:01.4162507
========== Finished ==========

它发生在Visual Studio 2012和Visual Studio 2017上。

Microsoft Visual Studio Community 2017  15.0.26228.4 D15RTWSVC

Microsoft .NET Framework                4.7.02556

NuGet Package Manager                   4.0.0

如何将Microsoft.AspNetCore.DataProtection包添加到.net 4.7.1项目中？

Answer 1

在VS 15.3中添加了NetStandard 2.0支持，您的15.0 RTW版本将无法安装.NET Standard 2.0软件包。

使用.NET Standard程序集时，您可能会在（经典）ASP.NET应用程序中遇到问题。 查看关于此主题的dotnet / Announcements GitHub问题 ，尤其是：

Web应用程序和网站不支持自动绑定重定向生成。 为了解决绑定冲突，您需要双击错误列表中的警告，Visual Studio会将它们添加到您的web.config文件中。