找不到指定的框架'Microsoft.NETCore.App'版本'2.2.0' [英] The specified framework 'Microsoft.NETCore.App', version '2.2.0' was not found

问题描述

我正在使用Visual Studio 2019版本16.3.7.我认为这是最新的更新.

I am using Visual Studio 2019 Version 16.3.7. I assume it is the latest update.

当我尝试编译基本的.NET Core 2.2控制台应用程序时:

When I try to compile a basic .NET Core 2.2 console application:

...我收到以下错误:

...I get the following error:

It was not possible to find any compatible framework version
The specified framework 'Microsoft.NETCore.App', version '2.2.0' was not found.
  - The following frameworks were found:
      1.0.1 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
      2.0.9 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
      2.1.11 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
      2.1.12 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
      2.1.13 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
      3.0.0 at [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]

You can resolve the problem by installing the specified framework and/or SDK.

The .NET Core frameworks can be found at:
  - https://aka.ms/dotnet-download .

我的理解是.NET Core 3.0向后兼容.为什么Visual Studio安装程序安装了2.2版以外的所有.NET Core版本?我该如何解决这个问题?

My understanding is that .NET Core 3.0 is backward compatible. Why Visual Studio installer installed all versions of .NET Core except 2.2? How do I solve this problem?

推荐答案

无论出于何种原因，.NET Core跨平台开发"工作负载均未安装.NET Core 2.2.

For whatever reason, .NET Core 2.2 is not installed by the ".NET Core cross-platform development" workload.

打开Visual Studio安装程序，然后转到单个组件"选项卡，您可以从此处安装它:

Open up the Visual Studio installer then go to the "Individual components" tab and you can install it from there:

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