///<summary>Generic function that launches different thread methods depending on how isSyncUsers and isSyncLocks are set.  Set only one or the other to true.</summary>
        private static string SyncAll(List <CentralConnection> listConns, bool isSyncUsers, bool isSyncLocks)
        {
            //Get CEMT users, groups, and associated permissions
            ListSyncErrors       = new List <string>();
            _listCEMTUsers       = Userods.GetUsersForCEMT();
            _securityLockDate    = PrefC.GetDate(PrefName.SecurityLockDate).ToShortDateString();
            _securityLockDays    = PrefC.GetInt(PrefName.SecurityLockDays);
            _securityLockAdmin   = PrefC.GetBool(PrefName.SecurityLockIncludesAdmin);
            _securityCentralLock = PrefC.GetBool(PrefName.CentralManagerSecurityLock);
            _syncCode            = PrefC.GetString(PrefName.CentralManagerSyncCode);
            _listAlertSubs       = AlertSubs.GetAll();
            List <CentralUserData> listCentralUserData = new List <CentralUserData>();
            List <UserGroup>       listUserGroups      = UserGroups.GetCEMTGroups();

            foreach (UserGroup userGroup in listUserGroups)             //for each CEMT user group
            //get all usergroupattaches, userods, and grouppermissions.
            {
                List <UserGroupAttach> listUserGroupAttaches = UserGroupAttaches.GetForUserGroup(userGroup.UserGroupNum);
                List <Userod>          listUserOds           = Userods.GetForGroup(userGroup.UserGroupNum);
                List <GroupPermission> listGroupPermissions  = GroupPermissions.GetPerms(userGroup.UserGroupNum);
                //then create a new CentralUserData and add it to the list.
                listCentralUserData.Add(new CentralUserData(userGroup, listUserOds, listGroupPermissions, listUserGroupAttaches));
            }
            string failedConns     = "";
            string nameConflicts   = "";
            string failedSyncCodes = "";

            for (int i = 0; i < listConns.Count; i++)
            {
                List <CentralUserData> listCentralDataForThreads = new List <CentralUserData>();
                for (int j = 0; j < listCentralUserData.Count; j++)
                {
                    listCentralDataForThreads.Add(listCentralUserData[j].Copy());
                }
                ODThread odThread = null;
                if (isSyncUsers)
                {
                    odThread = new ODThread(ConnectAndSyncUsers, new object[] { listConns[i], listCentralDataForThreads });
                    odThread.AddExceptionHandler(new ODThread.ExceptionDelegate(SyncExceptionHelper));
                }
                else if (isSyncLocks)
                {
                    odThread = new ODThread(ConnectAndSyncLocks, new object[] { listConns[i] });
                    odThread.AddExceptionHandler(new ODThread.ExceptionDelegate(SyncExceptionHelper));
                }
                else
                {
                    odThread = new ODThread(ConnectAndSyncAll, new object[] { listConns[i], listCentralDataForThreads });
                    odThread.AddExceptionHandler(new ODThread.ExceptionDelegate(SyncExceptionHelper));
                }
                odThread.GroupName = "Sync";
                odThread.Start(false);
            }
            ODThread.JoinThreadsByGroupName(Timeout.Infinite, "Sync");
            List <ODThread> listComplThreads = ODThread.GetThreadsByGroupName("Sync");

            for (int i = 0; i < listComplThreads.Count; i++)
            {
                if (listComplThreads[i].Tag == null)
                {
                    continue;                    //Failed due to lacking credentials
                }
                failedConns     += ((List <string>)listComplThreads[i].Tag)[0];
                nameConflicts   += ((List <string>)listComplThreads[i].Tag)[1];
                failedSyncCodes += ((List <string>)listComplThreads[i].Tag)[2];
                listComplThreads[i].QuitAsync();
            }
            string errorText = "";

            if (failedConns == "" && nameConflicts == "" && failedSyncCodes == "")
            {
                errorText += "Done";
            }
            if (failedConns != "")
            {
                errorText = "Failed Connections:\r\n" + failedConns + "Please try these connections again.\r\n";
            }
            if (nameConflicts != "")
            {
                errorText += "Name Conflicts:\r\n" + nameConflicts + "Please rename users and try again.\r\n";
            }
            if (failedSyncCodes != "")
            {
                errorText += "Incorrect Sync Codes:\r\n" + failedSyncCodes + "\r\n";
            }
            return(errorText);
        }