我有一个 VS2022 asp.net core 6 Web 应用程序，运行时许多 _Layout.cshtml 标记中的 html 标记属性 (b-g6ltozs93r) 无效。这是一个未受影响的项目的示例。 VS2019/.net5 或更早版本不会出现这种情况。发生在调试或发布、本地发布到文件夹或 Web 部署到服务器时。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Home page - WebApplication1</title>
<link rel="stylesheet" href="/lib/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="/css/site.css?v=sjk3m9Ugj7rjYsMBDEOUmfKesxbo63CbCXLz0gPFM6c" />
</head>
<body>
<header>
<nav b-g6ltozs93r class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
<div b-g6ltozs93r class="container">
<a class="navbar-brand" href="/">WebApplication1</a>
<button b-g6ltozs93r class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target=".navbar-collapse" aria-controls="navbarSupportedContent"
aria-expanded="false" aria-label="Toggle navigation">
<span b-g6ltozs93r class="navbar-toggler-icon"></span>
</button>
<div b-g6ltozs93r class="navbar-collapse collapse d-sm-inline-flex justify-content-between">
...
</div>
</div>
</nav>
</header>
<div b-g6ltozs93r class="container">
<main b-g6ltozs93r role="main" class="pb-3">
<div class="text-center">
<h1 class="display-4">Welcome</h1>
<p>Learn about <a href="https://learn.microsoft.com/aspnet/core">building Web apps with ASP.NET Core</a>.</p>
</div>
</main>
</div>
<footer b-g6ltozs93r class="border-top footer text-muted">
<div b-g6ltozs93r class="container">
© 2022 - WebApplication1 - <a href="/Privacy">Privacy</a>
</div>
</footer>
<script src="/lib/jquery/dist/jquery.min.js"></script>
<script src="/lib/bootstrap/dist/js/bootstrap.bundle.min.js"></script>
<script src="/js/site.js?v=4q1jwFhaPaZgr8WAUSrux6hAuh0XDg9kPS3xIVq36I0"></script>
<script src="/_framework/aspnetcore-browser-refresh.js"></script></body>
</html>```
这是.net 6的新功能CSS Isolation.
如果您不想要这个，您可以添加<ScopedCssEnabled>false</ScopedCssEnabled>在您的 .csproj 文件中，如下所示。我已经测试过它，它对我有用。
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
<Nullable>enable</Nullable>
<ImplicitUsings>enable</ImplicitUsings>
<ScopedCssEnabled>false</ScopedCssEnabled>
</PropertyGroup>
</Project>
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