The .NET scripting backend uses Microsoft’s .NET to power scripting. Unlike other Unity platforms, Universal Windows Platform does not use the .NET 3.5 Class Libraries profile, but rather a subset of .NET 4.5. This is due to Windows Store certification requirements. This means that the platform has some incompatibilities compared to other platforms, such as different plugin model and many missing types that are present in .NET 3.5 profile that Unity normally uses.
注意：已弃用 .NET 脚本后端，未来的 Unity 版本会将其删除。建议切换到 IL2CPP 脚本后端。