从ADGroup获取电子邮件地址列表

Question

如果我有Active Directory组的名称，如何获取成员列表或其电子邮件地址？

Answer 1

void Main()
{
    string groupName = "somegroup";
    string domainName = "somedomain";

    using(PrincipalContext ctx = new PrincipalContext(ContextType.Domain, domainName))
    {
        using(GroupPrincipal grp = GroupPrincipal.FindByIdentity(ctx, IdentityType.Name, groupName))
        {
            var sams = from x in grp.GetMembers(true) select new {x.SamAccountName, };
            var users = from sam in sams.Distinct()
                let usr = UserPrincipal.FindByIdentity(ctx, IdentityType.SamAccountName, sam.SamAccountName)
                select new { usr.SamAccountName, usr.DisplayName, usr.EmailAddress};
            //do something with users...
        }
    }
}

Answer 2

在这个网址中是一篇很好的文章，关于AD与C＃http://www.codeproject.com/Articles/18102/Howto-Almost-Everything-In-Active-Directory-via-C#42，用户存储为DirectoryEntry审查属性属性 http://msdn.microsoft.com/en-us/library/system.directoryservices.directoryentry.properties(v=vs.100).aspx