login name in c#

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Hi Team

There are 2 thing username and name of that user. we can get username by

C#

Environment.GetEnvironmentVariable("USERNAME");

But how should we get the name of that user(considering both are different)

Thanks in advance

Regards
Arihant

Posted 25-Jan-11 2:54am

ArihantShyamsukha

Updated 27-Jan-11 3:31am

Henry Minute

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Dylan Morley · Answer 1 · 2011-01-25T03:03:00

Have a look at System.Security.Principal;

e.g.

C#

WindowsPrincipal principal = new WindowsPrincipal(WindowsIdentity.GetCurrent());
Console.WriteLine(principal.Identity.Name);
Console.WriteLine(string.Format("User is administrator = {0}", principal.IsInRole("Administrators")));

You could then query Active Directory to retrieve additional information about the user

C#

using(DirectoryEntry de = new DirectoryEntry("LDAP://MyDomainController"))
{
   using(DirectorySearcher adSearch = new DirectorySearcher(de))
   {
       adSearch.PropertiesToLoad.Add("sn");  // surname = last name
       adSearch.PropertiesToLoad.Add("givenName");  // given (or first) name
       adSearch.PropertiesToLoad.Add("mail");  // e-mail addresse
       adSearch.PropertiesToLoad.Add("telephoneNumber");  // phone number


     adSearch.Filter = "(sAMAccountName=someuser)";
     SearchResult adSearchResult = adSearch.FindOne();
   }
}