將目標框架從 .NetStandard 2.0 更改為 .net 4.7.2 后無法恢復 nuget

Question

我剛剛將我們的幾個項目從 .net framework 4.6.2 更新到 .net framework 4.7.2，但出現以下錯誤：

Package Microsoft.AspNetCore 2.1.2 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore 2.1.2 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Authentication.Cookies 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Authentication.Cookies 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Authentication.JwtBearer 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Authentication.JwtBearer 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Cors 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Cors 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Identity.EntityFrameworkCore 2.1.2 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Identity.EntityFrameworkCore 2.1.2 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Mvc 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Mvc 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.StaticFiles 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.StaticFiles 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.SqlServer 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.EntityFrameworkCore.SqlServer 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.Tools 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.EntityFrameworkCore.Tools 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.Extensions.Configuration.UserSecrets 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.Extensions.Configuration.UserSecrets 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.Extensions.Logging.Debug 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.Extensions.Logging.Debug 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.VisualStudio.Web.BrowserLink 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.VisualStudio.Web.BrowserLink 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.Relational 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.EntityFrameworkCore.Relational 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.VisualStudio.Web.CodeGenerators.Mvc 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.VisualStudio.Web.CodeGenerators.Mvc 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    One or more packages are incompatible with .NETFramework,Version=v4.7.2.
    Package Microsoft.AspNetCore 2.1.2 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore 2.1.2 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Authentication.Cookies 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Authentication.Cookies 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Authentication.JwtBearer 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Authentication.JwtBearer 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Cors 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Cors 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Identity.EntityFrameworkCore 2.1.2 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Identity.EntityFrameworkCore 2.1.2 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Mvc 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Mvc 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.StaticFiles 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.StaticFiles 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.SqlServer 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.EntityFrameworkCore.SqlServer 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.Tools 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.EntityFrameworkCore.Tools 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.Extensions.Configuration.UserSecrets 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.Extensions.Configuration.UserSecrets 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.Extensions.Logging.Debug 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.Extensions.Logging.Debug 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.VisualStudio.Web.BrowserLink 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.VisualStudio.Web.BrowserLink 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.Relational 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.EntityFrameworkCore.Relational 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.VisualStudio.Web.CodeGenerators.Mvc 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.VisualStudio.Web.CodeGenerators.Mvc 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    One or more packages are incompatible with .NETFramework,Version=v4.7.2 (win7-x86).

真正讓我感到困惑的是 .NETFramework 4.7.2 與 .NET Standard 2.0 兼容，為什么我們會收到此錯誤消息？ 這沒有意義！ 非常感謝任何幫助。

Answer 1

我在我們的 CI 服務器上遇到了這個問題，結果發現安裝了nuget.exe的舊副本，將其升級到最新版本解決了這個問題（v4.1 到 4.7）

Answer 2

在稱為 VSTS 的 AzureDevOps 中對我有用的解決方案：

1 - 添加 dotnet 還原步驟。

2 - 在 Nuget 還原步驟的高級選項中，選擇自定義版本並將“Nuget.exe 的路徑”設置為：$(Build.BinariesDirectory)\\nuget.exe

3 - 在 NuGet 恢復任務之前添加一個內聯 PowerScript shell，參考這個 github 鏈接： https : //github.com/Microsoft/vsts-tasks/issues/3756#issuecomment-288185011

不要忘記將 Shell 腳本中的 nuget 版本更改為您想要的版本（對我來說是 4.3.0）。

Answer 3

將 NuGet 安裝程序更新到版本 2.*。 之后 NuGet.exe 將自動更新到 4.3 版