c# - System.Web.HttpContext.Current.User.Identity.Name not consistent -

in our project using system.web.httpcontext.current.user.identity.name userid domain. few pages say, login or home page or many of them returning username expected domainname

domainname\userid

when want trying upload file using usercontrol on 1 of pages, throws exception returning directly username

like harry,burlington instead of dom\hburlingt .

we using windows authentication mode in our web,config , sample code thats throwing exception

public static string getcurrusersloginidentity()     {         string name = "";         if (system.web.httpcontext.current != null)             name = system.web.httpcontext.current.user.identity.name;         else         {             windowsidentity id = windowsidentity.getcurrent();             if (id != null)                 name = id.name;         }          //if still don't have name wrong         if (string.isnullorempty(name))             throw new system.security.authentication.invalidcredentialexception("coult not retrieve idsid information user.");          return name; 

user.identity , windowsidentity.getcurrent() 2 different things:

user.identity on msdn returns system.security.principal object.

windowsidentity.getcurrent on msdn returns system.security.principal.iprincipal object.

so no surprise seeing 2 different names.

btw, name of method getcurrusersloginidentity misleading, since returns user's name not identity object itself.

and also, exception message contains spelling error: coult not retrieve idsid information user.