src/NetCoreBBS/Views/Shared/_LoginPartial.cshtml

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@inject SignInManager<User> SignInManager
@inject UserManager<User> UserManager

@if (SignInManager.IsSignedIn(User))
{
    <form asp-controller="Account" asp-action="LogOff" method="post" id="logoutForm" class="navbar-right">
        <ul class="nav navbar-nav navbar-right">
            <li>
                <div class="btn-group" style="margin-top:8px;">
                    <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                        @UserManager.GetUserName(User)<span class="caret"></span>
                    </button>
                    <ul class="dropdown-menu">
                        <li><a asp-controller="User" asp-action="Index">个人中心</a></li>
                        <li><a asp-controller="User" asp-action="Edit">编辑个人信息</a></li>
                        @if (UserManager.GetUserName(User).Equals("admin"))
                        {
                            <li role="separator" class="divider"></li>
                            <li><a asp-area="Admin" asp-controller="Manage" asp-action="Index">管理中心</a></li>
                        }
                    </ul>
                </div>
            </li>
            <li><a href="javascript:document.getElementById('logoutForm').submit()">注销</a></li>
            <li><a asp-controller="Home" asp-action="About">关于</a></li>
        </ul>
    </form>
}
else
{
    <ul class="nav navbar-nav navbar-right">
        <li><a asp-controller="Account" asp-action="Login">登录</a></li>
        <li><a asp-controller="Account" asp-action="Register">注册</a></li>
        <li><a asp-controller="Home" asp-action="About">关于</a></li>
    </ul>
}