Unity Api 兼容级别为 .NET Standard 2 但 Visual Studio 继续使用 .NET v4.7.1

Question

I'm using unity 2020.1.1f1, I recently noticed I'm using all of .NET 4.x features, new syntax like Auto-property initializers as in public int Health { get; set; } = 100; public int Health { get; set; } = 100; and so many others mentioned here

I get this for clrver command on Developer Command Prompt

Microsoft (R) .NET CLR Version Tool Version 4.7.2558.0 Copyright (c) Microsoft Corporation. All rights reserved.

Versions installed on the machine: v2.0.50727 v4.0.30319

Unity Player Settings, API Compatibility Level is .NET Standard 2.0

I've changed Assembly-CSharp.csproj v4.7.1 to v2.0 but it discards my changes and goes back to 4.7.1

I'm targeting mobile devices, I think .NET 2.0 is better for me but I don't know if whether Unity is actually using .NET 2 or .NET 4, since Unity Settings is set to use .NET Standard 2

Answer 1

The first is to update the.NET version of VS: Project -> Properties.

Modify the .NET version used by the Unity project.

1. In the Unity editor, click the menu Edit -> Project Setting -> Player.

2. Select the corresponding .NET version in Scripting Runtime Version*.

reference link: https://docs.unity3d.com/Manual/do.netProfileSupport.html .

Close VS. Check whether the Unity-related components are installed on the VS installer, and check it.

At this time, please check whether the Visual Studio Editor exists in the Unity of the current project: Window → Package Manager.

If it does not exist, switch Packages:Unity Registry in Package Manager, search for Visual Studio Editor, and click Install in the lower right corner.

Finally, Edit → Preferences... → External Tools, the selection box on the right side of the External Script Editor. Check the currently installed version of VS.

Reference document: https://learn.microsoft.com/en-us/visualstudio/gamedev/unity/troubleshooting/troubleshooting-and-known-issues-visual-studio-tools-for-unity#incompatible-project-in-visual-studio .

Hope it helps you.