Aspnetcore.docs: APIController attribute fails

[dstruve]

im getting the following error:
Error CS0246 The type or namespace name 'ApiControllerAttribute' could not be found (are you missing a using directive or an assembly reference?)

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Document Details

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• ID: 583ae3e7-5915-f22b-e54c-6c100cf2a7da
• Version Independent ID: 95f2549e-29f9-e31a-b4d0-432b971643ff
• Content: Create a Web API with ASP.NET Core and Visual Studio for Windows
• Content Source: aspnetcore/tutorials/first-web-api.md
• Product: asp.net-core
• GitHub Login: @Rick-Anderson
• Microsoft Alias: riande

[dstruve]

well, i did upgrade to 2.1 but it didnt change in my project and doesnt give the option to select it either, even after rebooting.

[dstruve]

im going to run the visual studio update. I hope that fixes it. version 15.7.3

[dstruve]

ok after I did the update, i couldnt fix my existing project. but once i started over it seemed to work , i hope.

[dstruve]

Yes that fixed it.

[scottaddie]

@dstruve Glad you figured it out. Visual Studio 2017 15.7 is the minimum version required to support ASP.NET Core 2.1. As you probably know, the [ApiController] attribute is available as of ASP.NET Core 2.1.

[viktor-mezhenskyi]

Exist two solutions:
1) Change version of tutorial. In the left top menu of the current website change ASP.NET Core 2.1 -> ASP.NET Core 2.0.
2) Upgrade asp.net core in your project to ASP.NET Core 2.1