Webapp/SDAF/Views/Shared/_LoginPartial.cshtml

@using System.Security.Principal

<ul class="navbar-nav">
@if (Context.Request.Headers.ContainsKey("X-MS-CLIENT-PRINCIPAL-ID"))
{
        <li class="nav-item super-wideonly">
            <span class="navbar-text text-dark">Hello @Context.Request.Headers["X-MS-CLIENT-PRINCIPAL-NAME"]! </span>
        </li>
        <li class="nav-item">
            <a class="nav-link text-dark" href="/.auth/logout">Sign out</a>
        </li>
}
else
{
        <li class="nav-item">
            <a class="nav-link text-dark" href="/.auth/login/aad/callback">Sign in</a>
        </li>
}
</ul>