从javascript的更新面板中刷新用户控件

问题描述：

大家好，

我正在一个项目中进行更新，我想刷新网页的一部分，其中我有一个包含动态数据的用户控件.该文本文件会经常更新，因此用户控件将从文本文件中加载数据.我需要单独刷新用户控件，而不是使用javascript刷新整个页面.我尝试了以下操作，但对我没有用.

Hi all,

I am working on a project where I want to refresh a part of the web page where i have a user control that contain dynamic data.user control will load data from a text file as this text file will update frequently. I need to refresh the user control alone not the whole page using javascript. I tried the following but it did not worked for me.

<%@ Page Language="C#" %>

<%@ Register src="ucTest.ascx" tagname="ucTest" tagprefix="uc1" %>

<script  runat="server">

   void button_Click(object sender, EventArgs e)
   {
       lbltest.Text = "Refreshed by server side event handler at " + DateTime.Now + ".<br>";
   }

</script>

<!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>
   <title>How to update an UpdatePanel with JavaScript</title>
   
   <script type="text/javascript">
   function UpdPanelUpdate()
   {
       __doPostBack("<%= button.ClientID %>","");
   }
   </script>
   
</head>
<body>
   <form id="form1"  runat="server">
      <asp:ScriptManager ID="ScriptManager1" runat="server" />
      <div>
      

   <a href="java<!-- no -->script:UpdPanelUpdate()">Update the Panel</a>
    
    <asp:Button ID="button" runat="server" OnClick="button_Click" style="display:none;"/>
      
         <asp:UpdatePanel runat="server" ID="UpdatePanel1" UpdateMode="Conditional">
            <contenttemplate> 
                <uc1:ucTest ID="ucTest1"  runat="server" />
                <asp:Label ID="lbltest" runat="server">
            </contenttemplate>
            <triggers>
               <asp:AsyncPostBackTrigger ControlID="button" EventName="Click" />
            </triggers>
         
      </div>
   </form>
</body>
</html>
</br>

我的用户控件是.

my user control is.

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="ucTest.ascx.cs" Inherits="ucTest" %>
<table border="3">
    <tr>
        <td>
            <%  Response.WriteFile("TextFile.txt"); %>
        </td>
    </tr>
</table>

这里TextFile.txt具有一些将经常更改的信息.

任何帮助将不胜感激.

Here TextFile.txthas some information that will be changed frequently.

any help would be greatly appreciated.

答

你好Tanweer，

您已进入更新面板.现在，为什么不使用计时器并使用tick事件刷新数据.

谢谢
sanjeev

hello Tanweer,

you have taken update panel. now why dont you take an timer and use the tick event for refreshing the data.

thanks
sanjeev

从javascript的更新面板中刷新用户控件

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