.net signalR 实例

1. install signalr for asp.net




2. Add Hub Class :

 public class ServerTimeHub : Hub
    {
        public void PushServerTime()
        {
            Clients.All.addNews(DateTime.Now.ToString());
        }


        /// <summary>
        /// call by client
        /// </summary>
        public void Subscribe()
        {
            var i = 0;
            while (i++ < 10)
            {
                Thread.Sleep(1000);
                PushServerTime();
            }
        }
    }

@{
    ViewBag.Title = "Signal R test";
}
<h2>Messages</h2>
<div class="container">
    <ul id="messages"></ul>
</div>
@section scripts {
    <!--Script references. -->
    <!--The jQuery library is required and is referenced by default in _Layout.cshtml. -->
    <!--Reference the SignalR library. -->
    <script src="~/Scripts/jquery.signalR-2.1.2.min.js"></script>
    <!--Reference the autogenerated SignalR hub script. -->
    <script src="~/signalr/hubs"></script>
    <!--SignalR script to update the chat page and send messages.-->
    <script>
        $(function () {
            // Reference the auto-generated proxy for the hub.
            var proxy = $.connection.serverTimeHub;
            // Create a function that the hub can call back to display messages.
            proxy.client.addNews = function (message) {
                // Add the message to the page.
                $(‘#messages‘).append(‘<li>‘ + htmlEncode(message) + ‘</li>‘);
            };


            // Start the connection.
            $.connection.hub.start().done(function () {
                    proxy.server.subscribe();
            });
        });
        // This optional function html-encodes messages for display in the page.
        function htmlEncode(value) {
            var encodedValue = $(‘<div />‘).text(value).html();
            return encodedValue;
        }
    </script>
}

 public class Startup
    {
        public void Configuration(IAppBuilder app)
        {


            app.MapSignalR();
        }
    }