var context = new PrincipalContext(ContextType.Domain);
        var principal = UserPrincipal.FindByIdentity(context, User.Identity.Name);

        int isAdmin = 0;
        int isSecretary = 0;
        foreach (GroupPrincipal group in principal.GetAuthorizationGroups())
        {
            if("AdmWDph" == (string)group.SamAccountName)
            {
                isAdmin = 1;
            } else if("PPOWDPh" == (string)group.SamAccountName || "ChiefWDPh" == (string)group.SamAccountName)
            {
                isSecretary = 1;
            }
        }
        Session["isAdmin"] = isAdmin;
        Session["isSecretary"] = isSecretary;