尝试创建一个信号R聊天应用程序但出现错误

Question

I am trying to create a signal R chat application where I want user who send message should be the only to recieve the message not everyone should recieve the message but dont know where I am doing wrong as message isnot recieved by any one. 我正在尝试创建一个信号R聊天应用程序，在该应用程序中，我希望发送消息的用户应该是唯一接收消息的人，而不是每个人都应该接收该消息，但不知道我在哪里做错了，因为任何人都不会收到消息。

My code is like this: Hub Class 我的代码是这样的：Hub类

using Microsoft.AspNet.SignalR;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace SignalRTutorials
{
    public class ChatHub:Hub
    {
        public void Send(  string message)
        {
            // Call the broadcastMessage method to update clients.
           //  Clients.All.broadcastMessage(name, message);
           Clients.User(HttpContext.Current.Session["Name"].ToString()).broadcastMessage(message);

        }

    }
}

index page is like this: 索引页是这样的：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="index.aspx.cs" Inherits="SignalRTutorials.index1" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
   <title>SignalR Simple Chat</title>
    <style type="text/css">
        .container {
            background-color: #99CCFF;
            border: thick solid #808080;
            padding: 20px;
            margin: 20px;
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
 <div class="container">
        <input type="text" id="message" />
        <input type="button" id="sendmessage" value="Send" />
        <input type="hidden" id="displayname" runat="server"  />
        <ul id="discussion">
        </ul>
    </div>
    <!--Script references. -->
    <!--Reference the jQuery library. -->
    <script src="Scripts/jquery-1.6.4.min.js" ></script>
    <!--Reference the SignalR library. -->
    <script src="Scripts/jquery.signalR-2.1.0.min.js"></script>
    <script src="Scripts/jquery.signalR-2.1.2.min.js"></script>
    <!--Reference the autogenerated SignalR hub script. -->
    <script src="signalr/hubs"></script>
    <!--Add script to update the page and send messages.--> 
    <script type="text/javascript">
        $(function () {
            // Declare a proxy to reference the hub. 
            var chat = $.connection.chatHub;
            // Create a function that the hub can call to broadcast messages.
            chat.client.OnMessage = function (message) {
                // Html encode display name and message. 
          // var encodedName = $('<div />').text(name).html();
                var encodedMsg = $('<div />').text(message).html();
                // Add the message to the page.  + encodedName
                $('#discussion').append('<li><strong>'
                    + '</strong>:&nbsp;&nbsp;' + encodedMsg + '</li>');
            };
            // Get the user name and store it to prepend to messages.
            $('#displayname').val(prompt('Enter your name:', ''));

            <% Session["Name"] = displayname.Value ;%>
            // Set initial focus to message input box.  
            $('#message').focus();
            // Start the connection.
            $.connection.hub.start().done(function () {
                $('#sendmessage').click(function () {
                    // Call the Send method on the hub. 
                    chat.server.send(  $('#message').val());
                    // Clear text box and reset focus for next comment. 
                    $('#message').val('').focus();
                });
            });
        });
    </script>
    </form>
</body>
</html>

Answer 1

Your question: I want user who send message should be the only to recieve the message not everyone should recieve the message. 您的问题：我希望发送消息的用户应该是唯一收到消息的用户，而不是每个人都应该收到消息。

To solve this, modify ChatHub class like this. 为了解决这个问题，像这样修改ChatHub类。

public void Send(string message)
{
   Clients.Caller.broadcastMessage(message); // calling user will be broadcasted the message only.
   // OR use below one.
   Clients.Client(Context.ConnectionId).broadcastMessage(message); // Context.ConnectionId -- contains connectionid for calling user.
}

When a client invokes a function on the server side you can retrieve their connection ID via Context.ConnectionId . 当客户端在服务器端调用函数时，可以通过Context.ConnectionId检索其连接ID。

Helpful links - http://www.asp.net/signalr/overview/guide-to-the-api/hubs-api-guide-server#selectingclients 有用的链接-http: //www.asp.net/signalr/overview/guide-to-the-api/hubs-api-guide-server#selectingclients

尝试创建一个信号R聊天应用程序但出现错误

问题描述

1 个解决方案

解决方案1
1 已采纳 2014-10-18 11:14:52

尝试创建一个信号R聊天应用程序但出现错误

问题描述

1 个解决方案

解决方案1 1 已采纳 2014-10-18 11:14:52

解决方案1
1 已采纳 2014-10-18 11:14:52