How to get the current user in ASP.NET MVC

I found that User works, that is, User.Identity.Name or User.IsInRole("Administrator").

Try HttpContext.Current.User.

Public Shared Property Current() As System.Web.HttpContext
Member of System.Web.HttpContext

Summary:
Gets or sets the System.Web.HttpContext object for the current HTTP request.

Return Values:
The System.Web.HttpContext for the current HTTP request

You can get the name of the user in ASP.NET MVC4 like this:

System.Web.HttpContext.Current.User.Identity.Name

I realize this is really old, but I'm just getting started with ASP.NET MVC, so I thought I'd stick my two cents in:

• Request.IsAuthenticated tells you if the user is authenticated.
• Page.User.Identity gives you the identity of the logged-in user.

I use:

Membership.GetUser().UserName

I am not sure this will work in ASP.NET MVC, but it's worth a shot :)

getting logged in username: System.Web.HttpContext.Current.User.Identity.Name

UserName with:

User.Identity.Name

But if you need to get just the ID, you can use:

using Microsoft.AspNet.Identity;

So, you can get directly the User ID:

User.Identity.GetUserId();

In order to reference a user ID created using simple authentication built into ASP.NET MVC 4 in a controller for filtering purposes (which is helpful if you are using database first and Entity Framework 5 to generate code-first bindings and your tables are structured so that a foreign key to the userID is used), you can use

WebSecurity.CurrentUserId

once you add a using statement

using System.Web.Security;

We can use following code to get the current logged in User in ASP.Net MVC:

var user= System.Web.HttpContext.Current.User.Identity.GetUserName();

Also

var userName = System.Security.Principal.WindowsIdentity.GetCurrent().Name; //will give 'Domain//UserName'

Environment.UserName - Will Display format : 'Username'

This page could be what you looking for:
Using Page.User.Identity.Name in MVC3

You just need User.Identity.Name.

Use System.Security.Principal.WindowsIdentity.GetCurrent().Name.

This will get the current logged-in Windows user.

For what it's worth, in ASP.NET MVC 3 you can just use User which returns the user for the current request.

If you are inside your login page, in LoginUser_LoggedIn event for instance, Current.User.Identity.Name will return an empty value, so you have to use yourLoginControlName.UserName property.

MembershipUser u = Membership.GetUser(LoginUser.UserName);

IPrincipal currentUser = HttpContext.Current.User;
bool writeEnable = currentUser.IsInRole("Administrator") ||
        ...
                   currentUser.IsInRole("Operator");

You can use following code:

Request.LogonUserIdentity.Name;

var ticket = FormsAuthentication.Decrypt(
                    HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName].Value);

if (ticket.Expired)
{
    throw new InvalidOperationException("Ticket expired.");
}

IPrincipal user =  (System.Security.Principal.IPrincipal) new RolePrincipal(new FormsIdentity(ticket));

If you happen to be working in Active Directory on an intranet, here are some tips:

(Windows Server 2012)

Running anything that talks to AD on a web server requires a bunch of changes and patience. Since when running on a web server vs. local IIS/IIS Express it runs in the AppPool's identity so, you have to set it up to impersonate whoever hits the site.

How to get the current logged-in user in an active directory when your ASP.NET MVC application is running on a web server inside the network:

// Find currently logged in user
UserPrincipal adUser = null;
using (HostingEnvironment.Impersonate())
{
    var userContext = System.Web.HttpContext.Current.User.Identity;
    PrincipalContext ctx = new PrincipalContext(ContextType.Domain, ConfigurationManager.AppSettings["AllowedDomain"], null,
                                                ContextOptions.Negotiate | ContextOptions.SecureSocketLayer);
    adUser = UserPrincipal.FindByIdentity(ctx, userContext.Name);
}
//Then work with 'adUser' from here...

You must wrap any calls having to do with 'active directory context' in the following so it's acting as the hosting environment to get the AD information:

using (HostingEnvironment.Impersonate()){ ... }

You must also have impersonate set to true in your web.config:

<system.web>
    <identity impersonate="true" />

You must have Windows authentication on in web.config:

<authentication mode="Windows" />

In Asp.net Mvc Identity 2,You can get the current user name by:

var username = System.Web.HttpContext.Current.User.Identity.Name;

In the IIS Manager, under Authentication, disable: 1) Anonymous Authentication 2) Forms Authentication

Then add the following to your controller, to handle testing versus server deployment:

string sUserName = null;
string url = Request.Url.ToString();

if (url.Contains("localhost"))
  sUserName = System.Security.Principal.WindowsIdentity.GetCurrent().Name;
else
  sUserName = User.Identity.Name;

If any one still reading this then, to access in cshtml file I used in following way.

<li>Hello @User.Identity.Name</li>