我在两个场景中使用相同的js脚本调用。。。一个是从一个按钮点击事件调用，它正常工作（更改标签文本）如下。。。

public void Test_OnClientClick(object sender, EventArgs e)
        {
            Console.WriteLine("test");
            ClientScript.RegisterStartupScript(this.GetType(), "updateText", "updateText('test');", true);
        }

当从redis订阅引发的事件调用它时，相同的调用不起作用。。。

public void Page_Load(object sender, EventArgs e)
    {
        // Establish connection
        redisConn = ConnectionMultiplexer.Connect(redisIP);
        rbsub = redisConn.GetSubscriber();
        rbsub.Subscribe(ServerRedisChannel).OnMessage(channelMessage => {
            MessageHandler(channelMessage.Message.ToString());
        });

    }

    public void MessageHandler(string cm)
    {
        try
        {
            //Test_OnClientClick(null, null);
            ClientScript.RegisterStartupScript(this.GetType(), "updateText", "updateText('test');", true);
        }
        catch (Exception e)
        {
            var x = e;
        }
    }

我确认它到达messagehandler中带有断点的clientscript调用，但它从未到达js脚本中的调试器。
完整代码如下：
默认.aspx

<%@ Page Title="Home Page" Async="true" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebForm._Default" %>

<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server">
<script type="text/javascript">

    function updateText(strData) {
        debugger;
        document.getElementById("<%=lblTest.ClientID%>").innerHTML = strData;
    }

</script> 

    <div class="jumbotron">
        <h1>redis test</h1>

        <p><asp:Label ID="lblTest" runat="server" Text="redis output"></asp:Label></p>
        <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Test_OnClientClick"/>

        <p><a href="http://www.asp.net" class="btn btn-primary btn-lg">Learn more &raquo;</a></p>
    </div>

</asp:Content>

默认.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using StackExchange.Redis;

namespace WebForm
{
    public partial class _Default : Page
    {
        ConnectionMultiplexer redisConn;
        ISubscriber rbsub;
        public const string redisIP = "gptdevnj01:6379";
        public const string ServerRedisChannel = "ac"; 
        public const int redisDB = 7;

        public void Page_Load(object sender, EventArgs e)
        {
            // Establish connection
            redisConn = ConnectionMultiplexer.Connect(redisIP);
            rbsub = redisConn.GetSubscriber();
            rbsub.Subscribe(ServerRedisChannel).OnMessage(channelMessage => {
                MessageHandler(channelMessage.Message.ToString());
            });

        }

        public void MessageHandler(string cm)
        {
            try
            {
                //Test_OnClientClick(null, null);
                ClientScript.RegisterStartupScript(this.GetType(), "updateText", "updateText('test');", true);
            }
            catch (Exception e)
            {
                var x = e;
            }
        }
        public void Test_OnClientClick(object sender, EventArgs e)
        {
            Console.WriteLine("test");
            ClientScript.RegisterStartupScript(this.GetType(), "updateText", "updateText('test');", true);
        }

    }
}

因此，我假设问题归结为从按钮单击事件调用js脚本与从订阅（或异步）事件调用js脚本不同？