客户端JS如何触发服务器控件的事件？

客户端按扭按了没有任何输出……<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ButtonPage.aspx.cs" Inherits="JavaScriptCallServerEvent.ButtonPage" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="serverButton" runat="server" onclick="serverButton_Click" Text="服务器按扭" />
        <input id="clientBtn" type="button" value="客户端按扭" onclick='javascript:<%=MyClientScript %>;' />
    </div>
    </form>
</body>
</html>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;namespace JavaScriptCallServerEvent
{
    public partial class ButtonPage : System.Web.UI.Page
    {
        public string MyClientScript { get; set; }
        protected void Page_Load(object sender, EventArgs e)
        {
            MyClientScript = Page.ClientScript.GetPostBackEventReference(serverButton, "MyButton");
        }        protected void serverButton_Click(object sender, EventArgs e)
        {
            Response.Write("我被点击了！");
        }
    }
}

解决方案 »

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    public string MyClientScript { get; set; }
    protected void Page_Load(object sender, EventArgs e)
    {
        MyClientScript = Page.ClientScript.GetPostBackEventReference(serverButton, "");
    }    protected void serverButton_Click(object sender, EventArgs e)
    {
        Response.Write("我被点击了！");
    }<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button UseSubmitBehavior="false" ID="serverButton" runat="server" OnClick="serverButton_Click" Text="服务器按扭" />
        <input id="clientBtn" type="button" value="客户端按扭" onclick="<%=MyClientScript %>;" />
    </div>
    </form>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>无标题页</title>
    <script type="text/javascript">
        function SendData(){
            var test = "csdn";
            <%=ClientScript.GetCallbackEventReference(Page, "test", "ReceiveData", null) %>
        }
        function ReceiveData(serverData){
            alert(serverData);
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input id="Button1" type="button" value="button" onclick="SendData()" />
    </div>
    </form>
</body>
</html>public partial class JSCallBack : System.Web.UI.Page, ICallbackEventHandler
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }    #region ICallbackEventHandler 成员
    public string ServerData = string.Empty;
    public string GetCallbackResult()
    {
        return ServerData + " MoreQuestion";
    }    public void RaiseCallbackEvent(string eventArgument)
    {
        ServerData = eventArgument;
    }    #endregion
}
直观的方法你可以使用ajax去调用后台的方法
ajax就是XMLhttpRequest，不是第三方组件
你可以拷贝粘贴下面的代码为aa.aspx直接测试看效果
<%@ Page Language="C#" EnableViewState="false" %>

<%@ Implements Interface="System.Web.UI.ICallbackEventHandler" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
  private string ReturnBackValue = " 返回到客户端的内容 | ";

  //声明函数，用来返回到客户端。
  public string GetCallbackResult()
  {
    return ReturnBackValue;//将结果返回客户端
  }

  //声明一个函数，用来接收客户端的参数;函数名字不可以随便，必须是RaiseCallbackEvent才可以
  public void RaiseCallbackEvent(String eventArgument)
  {
    this.ReturnBackValue += eventArgument;
  }
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title></title>
  <script type="text/javascript">
    function myfunction(arg) {
      <%=Page.ClientScript.GetCallbackEventReference(Page, "arg", "showMsg","")%>;
    }
    function showMsg(rValue) {
      alert(rValue);
    }
    alert("刷新测试");
  </script>
</head>
<body>
  <form id="form1" runat="server">
  <input type="button" onclick="myfunction('客户端传入的参数')" value="无刷新调用" />
  </form>
</body>
</html>
你有多余的代码。我尽量保留你多余的代码，只演示必要的：<%@ Page Language="C#" AutoEventWireup="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">    protected void serverButton_Click(object sender, EventArgs e)
    {
        ScriptManager.RegisterStartupScript(this, this.GetType(), "result", "alert('hi');", true);
    }    public string MyClientScript { get; set; }

    protected void Page_Load(object sender, EventArgs e)
    {
        Page.RegisterRequiresRaiseEvent(serverButton);
        MyClientScript = Page.ClientScript.GetPostBackEventReference(serverButton, "MyButton");
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="serverButton" runat="server" onclick="serverButton_Click" Text="服务器按扭" />
        <input id="clientBtn" type="button" value="客户端按扭" onclick="javascript:<%=MyClientScript %>;" />
    </div>
    </form>
</body>
</html>
或者也可以这样写<%@ Page Language="C#" AutoEventWireup="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">    protected void serverButton_Click(object sender, EventArgs e)
    {
        ScriptManager.RegisterStartupScript(this, this.GetType(), "result", "alert('hi');", true);
    }    public string MyClientScript { get; set; }    protected void Page_Load(object sender, EventArgs e)
    {
        MyClientScript = Page.ClientScript.GetPostBackEventReference(serverButton, "MyButton");
    }    protected override void Render(HtmlTextWriter writer)
    {
        Page.ClientScript.RegisterForEventValidation(serverButton.UniqueID, "MyButton");
        base.Render(writer);
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
         <asp:Button ID="serverButton" runat="server" onclick="serverButton_Click" Text="服务器按扭" />
        <input id="clientBtn" type="button" value="客户端按扭" onclick="javascript:<%=MyClientScript %>;" />
    </div>
    </form>
</body>
</html>
想知道为什么，请自己读相关的asp.net代码，理解其机制。
其实上面两个demo，是因为我使用了RegisterStartupScript，而不是Response.Write。我从来不写 Response.Write，我也不允许别人写这种坑爹的写法。你打开asp.net页面输出到浏览器端的代码看看，你的程序输出的还是正确html吗？
按那个按扭没反应……HTML:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ButtonPage.aspx.cs" Inherits="JavaScriptCallServerEvent.ButtonPage" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="serverButton" runat="server" onclick="serverButton_Click" Text="服务器按扭" />
        <input id="clientBtn" type="button" value="客户端按扭" onclick='javascript:<%=MyClientScript %>;' />
    </div>
    </form>
</body>
</html>
C#:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;namespace JavaScriptCallServerEvent
{
    public partial class ButtonPage : System.Web.UI.Page
    {
        public string MyClientScript { get; set; }        protected void Page_Load(object sender, EventArgs e)
        {
            Page.RegisterRequiresRaiseEvent(serverButton);
            MyClientScript = Page.ClientScript.GetPostBackEventReference(serverButton, "MyButton");
        }        protected void serverButton_Click(object sender, EventArgs e)
        {
            ScriptManager.RegisterStartupScript(this, this.GetType(), "result", "alert('"+e.ToString()+"');", true);
        }    }
}
http://www.cnblogs.com/hjf1223/archive/2006/07/05/443761.html
楼主看看这个对你有帮助不
楼上大神级别的都已经跟你写好了  实在不行   你可以看看jquery的ajax
P大哥不是Response.Write的错，而是使用Response.Write的位置不对，在Render之前，使用Response.Write肯定是在头部，坦白说RegisterStartupScript只是给Control多增加了一个控件
P哥，这个页面还得必须实现ICallBackEventHandler或者IPostBackEventHandler接口，才能进行这个页面的回发处理
客户端<input type="button" name="btnTest" value="测试"  onclick="javascript:<%=script %>;"/>
服务端public partial class _Default : System.Web.UI.Page, IPostBackEventHandler
{    protected string script;    protected void Page_Load(object sender, EventArgs e)
    {
        script = Page.GetPostBackEventReference(Page, "我操");
    }
    protected override void Render(HtmlTextWriter writer)
    {
        base.Render(writer);
    }    public void RaisePostBackEvent(string eventArgument)
    {
        //进行事件处理
    }
}