How to get the current user s Active Directory details in C

Question

I am working on an C  and ASP Net application  that uses Windows Authentication    i e  in Web config    lt system web gt       lt authentication mode  Windows    gt   lt  system web gt    I want to get details for the current user  full name  email address  etc  from Active Directory     I can get their pre Windows 2000 user login name  eg  SOMEDOMAIN someuser  by using  string username   HttpContext Current Request ServerVariables  AUTH USER      I ve worked out the LDAP query for the user  using their current login name  not their pre Windows 2000 user login name    DirectorySearcher adSearch   new DirectorySearcher            userprincipalname someuser somedomain com au     SearchResult adSearchResult   adSearch FindOne      However  I don t know how to either search AD for the user using their pre W2K login name  or get their login name in the  someuser somedomain com au  format   Any ideas

User · Answer

If you re using  NET 3 5 SP1  the better way to do this is to take a look at the   System DirectoryServices AccountManagement namespace    It has methods to find people and you can pretty much pass in any username format you want and then returns back most of the basic information you would need   If you need help on loading the more complex objects and properties check out the source code for http   umanage codeplex com its got it all   Brent

User · Answer

Alan already gave you the right answer - use the sAMAccountName to filter your user   I would add a recommendation on your use of DirectorySearcher - if you only want one or two pieces of information  add them into the  PropertiesToLoad  collection of the DirectorySearcher   Instead of retrieving the whole big user object and then picking out one or two items  this will just return exactly those bits you need   Sample   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   Those are just the usual AD LDAP property names you need to specify

User · Answer

The  pre Windows 2000  name i e  DOMAIN SomeBody  the Somebody portion is known as sAMAccountName   So try   using DirectoryEntry de   new DirectoryEntry  LDAP   MyDomainController         using DirectorySearcher adSearch   new DirectorySearcher de             adSearch Filter     sAMAccountName someuser         SearchResult adSearchResult   adSearch FindOne             someuser somedomain com au is the UserPrincipalName  but it isn t a required field

User · Answer

Add reference to COM  Active DS Type Library                 Int32 nameTypeNT4                  int  ActiveDs ADS NAME TYPE ENUM ADS NAME TYPE NT4              Int32 nameTypeDN                   int  ActiveDs ADS NAME TYPE ENUM ADS NAME TYPE 1779              Int32 nameTypeUserPrincipalName    int  ActiveDs ADS NAME TYPE ENUM ADS NAME TYPE USER PRINCIPAL NAME               ActiveDs NameTranslate nameTranslate   new ActiveDs NameTranslate                    Convert NT name DOMAIN User into AD distinguished name                  CN  User    Name OU IT OU All Users DC Company DC com              nameTranslate Set nameTypeNT4  ntUser                String distinguishedName   nameTranslate Get nameTypeDN                Console WriteLine distinguishedName                   Convert AD distinguished name  CN  User    Name OU IT OU All Users DC Company DC com                  into NT name DOMAIN User             ntUser   String Empty              nameTranslate Set nameTypeDN  distinguishedName               ntUser   nameTranslate Get nameTypeNT4               Console WriteLine ntUser                   Convert NT name DOMAIN User into AD UserPrincipalName Name User Company com             nameTranslate Set nameTypeNT4  ntUser               String userPrincipalName   nameTranslate Get nameTypeUserPrincipalName                Console WriteLine userPrincipalName

[c#] How to get the current user's Active Directory details in C#

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