void sqlDep_OnChange(object sender, SqlNotificationEventArgs e) { //or you can also check => if (e.Info == SqlNotificationInfo.Insert) , if you want notification only for inserted record if (e.Type == SqlNotificationType.Change) { //from here we will send notification message to client var notificationHub = GlobalHost.ConnectionManager.GetHubContext <NotificationHub>(); //Get Connected users NotificationHub notificationHub2 = new NotificationHub(); Dictionary <string, string> lstAllConnectedUsers = notificationHub2.GetLstAllConnectedUsers(); SqlDependency sqlDep = sender as SqlDependency; sqlDep.OnChange -= sqlDep_OnChange; List <string> clientList = new List <string>(); foreach (var item in dBChangeNotificationModelList) { foreach (KeyValuePair <string, string> entry in lstAllConnectedUsers) { if (item.UserId == Convert.ToInt32(entry.Key)) { clientList.Add(entry.Value); } } } clientList.Distinct(); notificationHub.Clients.All.test(dBChangeNotificationModelList.Count, lstAllConnectedUsers.Count, clientList.Count); //notificationHub.Clients.All.test1(1, 2, 3); //notificationHub.Clients.Clients(clientList).notify("added"); //notificationHub.Clients.All.notify("added"); //re-register notification RegisterNotification(DateTime.Now); } }