使用Active Directory C＃从组中获取所有用户的电子邮件

Question

I need all email address of a particular group. Please help me

string filter1 = string.Format("(&(objectClass=group)(cn={0}))", "groupname");
        DirectorySearcher searcher = new DirectorySearcher(entry);
        searcher.Filter = filter1;
        searcher.SearchScope = SearchScope.Subtree;
        searcher.PropertiesToLoad.Add("member");
        SearchResult res = searcher.FindOne();
        ArrayList userNames = new ArrayList();
        if (res != null)
        {
            for (int counter = 0; counter <res.Properties["member"].Count; counter++)
            {
                string user = (string)res.Properties["member"][counter];
                userNames.Add(user);
            }
        }

I am getting uesr name and other details but not get email. Please tell me the way to find email address of each user directly.

Answer 1

You can try with this code - based on PrincipalContext class

var username = "username";
var domain = "domain";
var emailAddresses = new List<string>();

var principalContext = new PrincipalContext(ContextType.Domain, domain);
var userPrincipal  = UserPrincipal.FindByIdentity(principalContext, username);
// Add the "mail" entry
emailAddresses.Add(userPrincipal.EmailAddress);

Link : http://msdn.microsoft.com/fr-fr/library/bb344891(v=vs.90).aspx