我想在.Net Core3.1的默认引导模板中添加一个左垂直侧边栏。此侧栏必须仅对注册用户在登录后可见。默认ScreenShot核心Web应用程序的.Net
下面是_Layout.cshtml的代码:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>@ViewData["Title"] - Agalber.Hostel.Backoffice</title>
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
<link rel="stylesheet" href="~/css/site.css" />
</head>
<body>
<header>
<nav class="navbar navbar-expand-sm navbar-toggleable-sm navbar-light bg-white border-bottom box-shadow mb-3">
<div class="container">
<a class="navbar-brand" asp-area="" asp-controller="Home" asp-action="Index"><img src="~/logoagalber.png" alt="AGALBER" width="102" height="46" /></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".navbar-collapse" aria-controls="navbarSupportedContent"
aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse d-sm-inline-flex flex-sm-row-reverse">
<partial name="_LoginPartial" />
<ul class="navbar-nav flex-grow-1">
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Index">Home</a>
</li>
<li class="nav-item">
<a class="nav-link text-dark" asp-area="" asp-controller="Home" asp-action="Privacy">Privacy</a>
</li>
</ul>
</div>
</div>
</nav>
</header>
<div class="container">
<main role="main" class="pb-3">
@RenderBody()
</main>
</div>
<footer class="border-top footer text-muted">
<div class="container">
© 2020 - Agalber.Hostel.Backoffice - <a asp-area="" asp-controller="Home" asp-action="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" asp-append-version="true"></script>
@RenderSection("Scripts", required: false)
</body>
</html>
下面是site.css文件的内容。
/* Please see documentation at https://learn.microsoft.com/aspnet/core/client-side/bundling-and-minification
for details on configuring this project to bundle and minify static web assets. */
a.navbar-brand {
white-space: normal;
text-align: center;
word-break: break-all;
}
/* Provide sufficient contrast against white background */
a {
color: #0366d6;
}
.btn-primary {
color: #fff;
background-color: #1b6ec2;
border-color: #1861ac;
}
.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
color: #fff;
background-color: #1b6ec2;
border-color: #1861ac;
}
/* Sticky footer styles
-------------------------------------------------- */
html {
font-size: 14px;
}
@media (min-width: 768px) {
html {
font-size: 16px;
}
}
.border-top {
border-top: 1px solid #e5e5e5;
}
.border-bottom {
border-bottom: 1px solid #e5e5e5;
}
.box-shadow {
box-shadow: 0 .25rem .75rem rgba(0, 0, 0, .05);
}
button.accept-policy {
font-size: 1rem;
line-height: inherit;
}
/* Sticky footer styles
-------------------------------------------------- */
html {
position: relative;
min-height: 100%;
}
body {
/* Margin bottom by footer height */
margin-bottom: 60px;
}
.footer {
position: absolute;
bottom: 0;
width: 100%;
white-space: nowrap;
line-height: 60px; /* Vertically center the text there */
}
有人能帮我解决这个问题吗?
发布于 2020-08-30 05:15:27
假设您使用Asp.net核心标识登录网站,如果是这样,您可以检查User或HttpContext.User.Identity.IsAuthenticated是否为真,然后根据显示侧边栏的结果。
代码如下(_Layout.cshtml):
<div class="container">
@if (User.Identity.IsAuthenticated)
{
<div class="sidenav">
<a href="#about">About</a>
<a href="#services">Services</a>
<a href="#clients">Clients</a>
<a href="#contact">Contact</a>
</div>
}
<div class="main">
<main role="main" class="pb-3">
@RenderBody()
</main>
</div>
</div>CSS样式:
body {
font-family: "Lato", sans-serif;
}
.sidenav {
width: 130px;
position: fixed;
z-index: 1;
top: 60px;
left: 10px;
background: #eee;
overflow-x: hidden;
padding: 8px 0;
}
.sidenav a {
padding: 6px 8px 6px 16px;
text-decoration: none;
font-size: 25px;
color: #2196F3;
display: block;
}
.sidenav a:hover {
color: #064579;
}
.main {
margin-left: 140px; /* Same width as the sidebar + left position in px */
padding: 0px 10px;
}登录成功后,结果如下:

如果不使用Asp.net核心标识,可以使用ViewData或TempData存储用户信息,然后在布局页面中使用If语句检查ViewData或TempData是否为空,然后显示侧栏。
https://stackoverflow.com/questions/63632842
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