.net核心托管-服务器已安装两个.net核心运行时

Question

Our app was originally built with .net core 1.x. We would like to upgrade to .net core 2.0.

I installed the hosting bundle from here . But now I have the 1.0.0 Runtime and 2.0.5 runtime installed.

1. Do I need to uninstall the 1.0.0 runtime?
2. How can I tell which runtime my app will use?

Answer 1

The short answer is that you should read the documentation for .NET Core. As Scott Hanselman (PM of the ASP.NET Core team) has pointed out, multiple versions of the .NET Core runtime can be installed side by side without issue

As user Camilo Terevinto pointed out in their comment, the highest version of the runtime will be used when your app is started.

Answer 2

Microsoft has placed a limited life on the 1.0.0 runtime. Since 2.0.0 introduced major changes, that break applications written in 1.0.0. For a more sustainable environment, you should remove the older runtime, then ensure the latest runtime and hosted core package are installed. Those can be found on the document page.

To determine the runtime your application is utilizing, you can find that information within your project. The assembly will include the information of which framework you're actually targeting against.