AD,Group

            DataTable dtUser = GetEmptyDT();

            Dictionary<DirectoryEntry, string> test1 = GetUserAndGroup(clsConst.enumADName.AD_1);

            foreach (DirectoryEntry deUser in test1.Keys)
            {
                string groupname = test1[deUser];
                string sAMAccountName = GetProperty(deUser, "sAMAccountName");
                string mail = GetProperty(deUser, "mail");
                string department = GetProperty(deUser, "Department");
                string displayName = GetProperty(deUser, "displayName");
                string givenName = GetProperty(deUser, "givenName");
                string sn = GetProperty(deUser, "sn");

                DataRow dr = dtUser.NewRow();
                dr["ADName"] = clsConst.enumADName.AD_1;
                dr["GroupName"] = groupname;
                dr["LoginName"] = sAMAccountName;
                dr["Department"] = department;
                dr["MailAddress"] = mail;
                dr["DisplayName"] = displayName;
                dr["FirstName"] = givenName;
                dr["LastName"] = sn;
                dtUser.Rows.Add(dr);
            }

            ExportLog(dtUser, "UserInformation_log", ConfigurationManager.AppSettings["UserInformationPath"]);

        public static Dictionary<DirectoryEntry, string> GetUserAndGroup(string ADName)
        {
            string[] GroupName = { string.Empty };
            string path = string.Empty;
            string username = string.Empty;
            string password = string.Empty;
            if (ADName.Equals(clsConst.enumADName.AD_1))
            {
                path = ConfigurationManager.AppSettings["1Path"];
                username = ConfigurationManager.AppSettings["1UserName"];
                password = ConfigurationManager.AppSettings["1Password"];
                GroupName = ConfigurationManager.AppSettings["1Groups"].Split(',');
            }
            if (ADName.Equals(clsConst.enumADName.AD_2))
            {
                path = ConfigurationManager.AppSettings["2Path"];
                username = ConfigurationManager.AppSettings["2UserName"];
                password = ConfigurationManager.AppSettings["2Password"];
                GroupName = ConfigurationManager.AppSettings["2Groups"].Split(',');
            }
            if (ADName.Equals(clsConst.enumADName.AD_3))
            {
                path = ConfigurationManager.AppSettings["3Path"];
                username = ConfigurationManager.AppSettings["3UserName"];
                password = ConfigurationManager.AppSettings["3Password"];
                GroupName = ConfigurationManager.AppSettings["3Groups"].Split(',');
            }

            List<SearchResult> results = new List<SearchResult>();
            DirectoryEntry de = GetDirectoryObject(ADName);

            DirectorySearcher deSearch = new DirectorySearcher();

            deSearch.SearchRoot = de;
            string strFilter = string.Empty;
            if (GroupName.Length <= )
            {
                return null;
            }
            strFilter = "(&(objectClass=group){0}(cn=" + GroupName[] + "){1})";
            string s1 = string.Empty;
            string s2 = string.Empty;
            if (GroupName.Length > )
            {
                s1 = "(|";
                for (int i = ; i < GroupName.Length; i++)
                {
                    s2 += "(cn=" + GroupName[i] + ")";
                }
                s2 += ")";
            }
            strFilter = string.Format(strFilter, s1, s2);

            deSearch.Filter = strFilter;
            deSearch.SearchScope = SearchScope.Subtree;
            SearchResultCollection searchResults = deSearch.FindAll();

            Dictionary<DirectoryEntry, string> groupAndUser = new Dictionary<DirectoryEntry, string>();

            List<string> dnstr = new List<string>();
            foreach (SearchResult searchResult in searchResults)
            {

                DirectoryEntry deGroup = new DirectoryEntry(searchResult.Path, username, password, AuthenticationTypes.Secure);
                System.DirectoryServices.PropertyCollection pcoll = deGroup.Properties;
                int n = pcoll["member"].Count;

                for (int l = ; l < n; l++)
                {
                    DirectoryEntry deUser = new DirectoryEntry(path + "/" + pcoll["member"][l].ToString(), username, password, AuthenticationTypes.Secure);
                    string dn = deUser.Properties["distinguishedName"][].ToString();
                    if (!dnstr.Contains(dn))
                    {
                        dnstr.Add(dn);
                        groupAndUser.Add(deUser,deGroup.Name.Remove(,));
                    }
                }

            }
            return groupAndUser;
        }