ASP.net Razor and Form views to show Integrated Windows Authentication details.

<!-- ASP.NET Razor View -->
<!-- ======================================================================= -->

@using System.Security.Principal
@using System.Threading
@model dynamic
@{
    Layout = null;
}
<!DOCTYPE html>
<html>
<head>
    <title>Windows Authentication Details</title>
</head>
<body>
    <h2>Windows Authentication Details</h2>
    <h3>User Identity</h3>
    <ul>
        <li><strong>Name:</strong> @User.Identity.Name</li>
        <li><strong>Authentication Type:</strong> @User.Identity.AuthenticationType</li>
        <li><strong>Is Authenticated:</strong> @User.Identity.IsAuthenticated</li>
    </ul>
    <h3>Thread Identity</h3>
    <ul>
        <li><strong>Identity:</strong> @Thread.CurrentPrincipal.Identity.Name</li>
    </ul>
    @{
        WindowsIdentity windowsIdentity = WindowsIdentity.GetCurrent();
    }
    @if (windowsIdentity != null)
    {
        <h3>Windows Identity</h3>
        <ul>
            <li><strong>Name:</strong> @windowsIdentity.Name</li>
            <li><strong>Authentication Type:</strong> @windowsIdentity.AuthenticationType</li>
            <li><strong>Is Authenticated</strong> @windowsIdentity.IsAuthenticated</li>
            <li><strong>Is Anonymous:</strong> @windowsIdentity.IsAnonymous</li>
            <li><strong>Is Guest:</strong> @windowsIdentity.IsGuest</li>
            <li><strong>Is System:</strong> @windowsIdentity.IsSystem</li>
            <li><strong>Impersonation Level:</strong> @windowsIdentity.ImpersonationLevel.ToString()</li>
        </ul>
    }
    @if (windowsIdentity != null)
    {
        <p><strong>Group Membership:</strong></p>
        <ul>
            @if (windowsIdentity.Groups != null)
            {
                foreach (var groupId in windowsIdentity.Groups)
                {
                    var groupName = groupId.Translate(typeof(NTAccount));
                    <li>@groupName <small>(@groupId)</small></li>
                }
            }
        </ul>
    }
</body>
</html>

<!-- ASP.NET Forms Page -->
<!-- ======================================================================= -->

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Security.Principal" %>
<%@ Import Namespace="System.Threading" %>
<!DOCTYPE html>
<html>
<head>
    <title>Windows Authentication Details</title>
</head>
<body>
    <h2>Windows Authentication Details</h2>
    <h3>User Identity</h3>
    <ul>
        <li><strong>Name:</strong> <%= User.Identity.Name %></li>
        <li><strong>Is Authenticated:</strong> <%= User.Identity.IsAuthenticated %></li>
        <li><strong>Authentication Type:</strong> <%= User.Identity.AuthenticationType %></li>
    </ul>
    <h3>Thread Identity</h3>
    <ul>
        <li><strong>Identity:</strong> <%= Thread.CurrentPrincipal.Identity.Name %></li>
    </ul>
    <h3>Windows Identity</h3>
    <% WindowsIdentity windowsIdentity = WindowsIdentity.GetCurrent(); %>
    <ul>
        <li><strong>Name:</strong> <%= windowsIdentity.Name %></li>
        <li><strong>Authentication Type:</strong> <%= windowsIdentity.AuthenticationType %></li>
        <li><strong>Is Authenticated:</strong> <%= windowsIdentity.IsAuthenticated %></li>
        <li><strong>Is Anonymous:</strong> <%= windowsIdentity.IsAnonymous %></li>
        <li><strong>Is Guest:</strong> <%= windowsIdentity.IsGuest %></li>
        <li><strong>Is System:</strong> <%= windowsIdentity.IsSystem %></li>
        <li><strong>Impersonation Level:</strong> <%= windowsIdentity.ImpersonationLevel.ToString() %></li>
    </ul>
    <p><strong>Group Membership:</strong></p>
    <ul>
    <% foreach (var groupId in windowsIdentity.Groups)
    {
        var groupName = groupId.Translate(typeof(NTAccount));
        Response.Write("<li>" + @groupName + "</li>");
    } %>
    </ul>
</body>
</html>