Javascript ScriptManager.RegisterStartupScript在特定的aspx页面上不工作

我在webproject中的所有.aspx页面中都使用了ScriptManager.RegisterStartuupScript。 它在所有页面上都有效，但在1页上无效

以下代码段来自其工作的页面：

<%@ Page Language="C#" MasterPageFile="~/MasterPage.Master" AutoEventWireup="true" CodeBehind="Retour.aspx.cs" Inherits="SXSorOverview.Retour" culture="auto" meta:resourcekey="PageResource1" uiculture="auto"%>
<%@ Import Namespace="System.Threading" %>
<%@ Import Namespace="System.Globalization" %>
<script runat="server">
    protected override void InitializeCulture()
    {
        if (Request.QueryString["Lang"] != null) { 
            if (Request.QueryString["Lang"].Equals("FR"))
            {
                Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("fr-FR");
                Thread.CurrentThread.CurrentUICulture = new CultureInfo("fr-FR");
                ScriptManager.RegisterStartupScript(this, GetType(), "setSelected", "javascript:window.alert('test');", true);
            } else if (Request.QueryString["Lang"].Equals("EN")) {
                Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("en-US");
                Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-US");
                ScriptManager.RegisterStartupScript(this, GetType(), "setSelected", "javascript:window.alert('test');", true);
            }
            else
            {
                Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("nl-NL");
                Thread.CurrentThread.CurrentUICulture = new CultureInfo("nl-NL");
                ScriptManager.RegisterStartupScript(this, GetType(), "setSelected", "javascript:window.alert('test');", true);
            }
            base.InitializeCulture();
        }
        else
        {
            Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("nl-NL");
            Thread.CurrentThread.CurrentUICulture = new CultureInfo("nl-NL");
            ScriptManager.RegisterStartupScript(this, GetType(), "setSelected", "javascript:window.alert('test');", true);
            base.InitializeCulture();
        }
    }
</script>

以下代码段来自其不工作的页面：

<%@ Page Language="C#" MasterPageFile="~/MasterPage.Master" AutoEventWireup="true" CodeBehind="Home.aspx.cs" Inherits="SXSorOverview.Home" culture="auto" uiculture="auto"%>
<%@ Import Namespace="System.Threading" %>
<%@ Import Namespace="System.Globalization" %>
<script runat="server">
    protected override void InitializeCulture()
    {
        if (Request.QueryString["Lang"] != null) { 
            if (Request.QueryString["Lang"].Equals("FR"))
            {
                Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("fr-FR");
                Thread.CurrentThread.CurrentUICulture = new CultureInfo("fr-FR");
                ScriptManager.RegisterStartupScript(this, GetType(), "setSelected", "javascript:window.alert('test');", true);
            } else if (Request.QueryString["Lang"].Equals("EN")) {
                Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("en-US");
                Thread.CurrentThread.CurrentUICulture = new CultureInfo("en-US");
                ScriptManager.RegisterStartupScript(this, GetType(), "setSelected", "javascript:window.alert('test');", true);
            }
            else
            {
                Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("nl-NL");
                Thread.CurrentThread.CurrentUICulture = new CultureInfo("nl-NL");
                ScriptManager.RegisterStartupScript(this, GetType(), "setSelected", "javascript:window.alert('test');", true);
            }
            base.InitializeCulture();
        }
        else
        {
            Thread.CurrentThread.CurrentCulture = CultureInfo.CreateSpecificCulture("nl-NL");
            Thread.CurrentThread.CurrentUICulture = new CultureInfo("nl-NL");
            ScriptManager.RegisterStartupScript(this, GetType(), "setSelected", "javascript:window.alert('test');", true);
            base.InitializeCulture();
        }
    }
</script>

我尝试了目前为止在互联网上找到的所有解决方案，但都无济于事。 我没有使用updatepanels。

---

有人知道为什么javascript没有在这一页上执行吗？

javascript在这一页上呈现了吗？是的。如果我在$document.ready-function中放置testalert，就会显示警报。在这种情况下，可能是javascript中的错误。你试过调试吗？嗨，巴勃罗，我发现了问题。显然，为了让Scriptmanager.registerstartupscript正常工作，页面上必须有一个表单。