Q:

Get current logged in username

I want to get the user name of the current logged in user. I am using the below code but it returns the user whose credentials are used in IIS application pool identity. The mvc website is deployed on a server. 
I have used
string userid = System.Security.Principal.WindowsIdentity.GetCurrent().Name.ToString();
string userid = Environment.UserName;
string userid = System.DirectoryServices.AccountManagement.UserPrincipal.Current.GivenName.ToString();
string userid = System.Web.HttpContext.Current.User.Identity.Name.ToString()
But nothing seems to give me correct answer.
I need to get user name in the constructor of the HomeController.
Below is my web.config
<authentication mode="Windows" />
<authorization>
    <allow users="*" />
</authorization>

A:

just instead of
string userid = System.Web.HttpContext.Current.User.Identity.Name.ToString()

use this,this will work fine  
string userid = HttpContext.Current.User.Identity.Name.ToString() 

