SignalR notification never reload the page

Question

I was using signalR to manage database changes, when it happens I want to update the page to other users so that they see the change. But what I've done so far always loads, here is the code:

INDEX

@section scripts{  
    <script src="~/Scripts/jquery.signalR-2.4.3.min.js"></script>  
    <script src="/signalr/hubs"></script>  
    <script type="text/javascript">  
        $(function () {  
            var hubNotify = $.connection.Connection4Hub;  
  
            $.connection.hub.start().done(function () {  
                getAll();
            });  
  
            hubNotify.client.GetUpdateData = function () {  
                getAll();
            };
        });  
                          
        function getAll() {  
            var model = $('#dataModel');  
            $.ajax({  
                url: '/Manage/GetUpdateData',  
                contentType: 'application/html ; charset:utf-8',  
                type: 'GET',  
                dataType: 'html',  
                success: function(result) { model.empty().append(result); }  
            });                           
            location.reload();
        }  
    </script>  
}

Connect4Hub

public class Connect4Hub : Hub
    {
        public static void BroadcastData()
        {
            IHubContext context = GlobalHost.ConnectionManager.GetHubContext<Connect4Hub>();
            context.Clients.All.GetUpdateData();
        }
    }

MANAGE

public ActionResult GetUpdateData()
        {
            return PartialView("Partial_Index", db.Matches.ToList());
        }

UPDATE

I found that the method below is never call, now the page never refresh

hubNotify.client.GetUpdateData = function () {  
                getAll();
            };

If it is a new database, with no relevant data, you could just delete it and apply your migrations. — AchoVasilev, May 27 '22 at 14:54
Have you tried this solution? Also, what version of EF is this? https://stackoverflow.com/questions/26305273/there-is-already-an-object-named-in-the-database#26305974 — Dan Csharpster, May 27 '22 at 18:38
Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. — Community, May 28 '22 at 03:06
Have you tried defining ```hubNotify.client.GetUpdateData``` before you start the connection? — YungDeiza, Jun 10 '22 at 14:51

score 0 · Accepted Answer · answered Jun 14 '22 at 05:27

The SignalR Hubs API enables you to make remote procedure calls (RPCs) from a server to connected clients and from clients to the server. In server code, you define methods that can be called by clients, and you call methods that run on the client.

In client code, you define methods that can be called from the server, and you call methods that run on the server. SignalR takes care of all of the client-to-server plumbing for you.client can call hub inherited method only.

Call BroadcastData methods that run on the server:

hubNotify.client.BroadcastData = function () {  
                                        getAll();
                                 };

Ref: Link

SignalR notification never reload the page

1 Answers1