@using System.Security.Principal
 
@if (User.Identity.IsAuthenticated)
{
    using (Html.BeginForm("LogOff", "Account", FormMethod.Post, new { id = "logoutForm", @class = "navbar-right" }))
    {
        @Html.AntiForgeryToken()
        <ul class="nav navbar-nav navbar-right">
            <li>
                @Html.ActionLink("Hello " + User.Identity.GetUserName() + "!", "Manage", "Account", routeValues: null, htmlAttributes: new { title = "Manage" })
            </li>
            <li><a href="javascript:document.getElementById('logoutForm').submit()">Log off</a></li>
        </ul>
    }
}
else
{
    <ul class="nav navbar-nav navbar-right">
        <li>@Html.ActionLink("Register", "Register", "Account", routeValues: null, htmlAttributes: new { id = "registerLink" })</li>
        <li>@Html.ActionLink("Log in", "Login", "Account", routeValues: null, htmlAttributes: new { id = "loginLink" })</li>
    </ul>
}

@using System.Security.Principal
 
@if (User.Identity.IsAuthenticated)
{
    <form method="post" controller="Account" action="LogOff" id="logoutForm" class="navbar-right">
        <ul class="nav navbar-nav navbar-right">
            <li>
                <a controller="Account" action="Manage" title="Manage">Hello @User.Identity.GetUserName()!</a>
            </li>
            <li><a href="javascript:document.getElementById('logoutForm').submit()">Log off</a></li>
        </ul>
    </form>
}
else
{
    <ul class="nav navbar-nav navbar-right">
        <li><a id="registerLink" controller="Account" action="Register">Register</a></li>
        <li><a id="loginLink" controller="Account" action="Login">Log in</a></li>
    </ul>
}

<li><a id="loginLink" controller="Account" action="Login">Log in</a></li>

<li><a id="loginLink" href="@Url.Content("~/Account/Login")">Log in</a></li>

<li><a href="@Url.Content("~/Account/Login")">Log in</a></li>

<li><a href="~/Account/Login">Log in</a></li>

<li><a href="~/Account/Login">Log in</a></li>