SignalR客户端未触发服务器代码

Question

i am testing this signal with a very basic string. But the client side is not firing the server code and there is no error. i added the [HubName("MyHub1")] and the [HubMethodName("GetValueString")] in because if not the javascript will complaint client undefine and methodname not found.

after i added this 2 meta in. there is no error but server code was not fire. Anyone help please.

Client Script

(function () {
    // Defining a connection to the server hub.
    debugger
    var myHub = $.connection.MyHub1;
    // Setting logging to true so that we can see whats happening in the browser console log. [OPTIONAL]
    $.connection.hub.logging = true;
    // Start the hub
    $.connection.hub.start();

    // This is the client method which is being called inside the MyHub constructor method every 3 seconds
    myHub.client.GetValueString = function (serverTime) {
        // Set the received serverTime in the span to show in browser
        $("#newTime").html(serverTime);
    };
}());

Server script

[HubName("MyHub1")]
public class MyHub1 : Hub
{
    public void Hello()
    {
        Clients.All.hello();
    }
    [HubMethodName("GetValueString")]
    public void Getstring() {
        var taskTimer = Task.Factory.StartNew(async () =>
        {
            while (true)
            {
                string timeNow = DateTime.Now.ToString();
                //Sending the server time to all the connected clients on the client method ()
                Clients.All.GetValueString("test");
                //Delaying by 3 seconds.
                await Task.Delay(3000);
            }
        }, TaskCreationOptions.LongRunning
          );


    }
}

Update 1 so i change my javascript to this and the output was "undefine" but no error also

var haha = myHub.client.GetValueString; // Set the received serverTime in the span to show in browser

Answer 1

Try to give this ago. Also, use this for reference

I've added a console.log try and see if you see it when you run this code.

(function () {

    var myHub = $.connection.MyHub1;

    myHub.client.GetValueString = function (serverTime) {

        $("#newTime").html(serverTime);
    };

    $.connection.hub.logging = true;

    $.connection.hub.start().done(function() {
        console.log("hub is ready"); // tell me if you see the message in your console log
        myHub.server.getstring() // note i wrote getstring with a small g, has to be.
    });


}());

[HubName("MyHub1")]
public class MyHub1 : Hub
{
    public void Hello()
    {
        Clients.All.hello();
    }

    public void Getstring() {
        var taskTimer = Task.Factory.StartNew(async () =>
        {
            while (true)
            {
                string timeNow = DateTime.Now.ToString();
                //Sending the server time to all the connected clients on the client method ()
                Clients.All.GetValueString("test");
                //Delaying by 3 seconds.
                await Task.Delay(3000);
            }
        }, TaskCreationOptions.LongRunning
          );


    }
}