c# - Get domain chosen by PrincipalContext -


i'm creating custom login functionality asp.net validates against active directory. user must able login username or username , domain (and password in both cases).

code:

authuser user = authentication.getdomainandusername(givenusername);  bool validaccount = false;  principalcontext network = null; if (user.domain != "") network = new principalcontext(contexttype.domain, user.domain); else network = new principalcontext(contexttype.domain);  if (userprincipal.findbyidentity(network, identitytype.samaccountname, user.username) != null) {       validaccount = network.validatecredentials(givenusername, givenpassword, contextoptions.negotiate); }

the "authuser" contains username and, if given, domain. if user didn't explicitly specify domain above still works fine.

so if call 

new principalcontext(contexttype.domain);

it seems domain set automatically.

in case, how can find out domain used?

you can domain used user principal returned userprincipal.findbyidentity()


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