Get values in an update panel from controls added dynamically in another Update panel

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I have a page (ASP.net) that contains two update panels, in the first one I add some controls in the run time (Textbox) and I want to get the values of these dynamically add controls in the second update panel upon the certain action in this panel.

If any one could advice with a proper solution for this situation taking in consideration that the two panels can't be merged in one update panel due to some business logic.

Thanks in advance :)

Posted 14-Sep-11 20:56pm

engr_hossam

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Tejas Vaishnav · Answer 1 · 2011-09-15T03:01:00

C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace MyEcommerce
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            btnShow.Attributes.Add("onclick", "show();");
        }

        protected void bntAdd_Click(object sender, EventArgs e)
        {
            TextBox txt = new TextBox();
            txt.ID = "txtMessage";
            NewUpdatePanel.Controls.Add(txt);
        }
    }
}

HTML

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <script type="text/javascript">
        function show() {
            var txt = document.getElementById("txtMessage");
            var ans = document.getElementById("<%= txtAns.ClientID %>");
            ans.value = txt.value;          
        }
            
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
        <asp:ScriptManager ID="ScriptManager1" runat="server">
        
        <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <contenttemplate>
            <div id="NewUpdatePanel"  runat="server">
            </contenttemplate></div>
        
        
    <asp:UpdatePanel ID="UpdatePanel2" runat="server">
        <contenttemplate>
            <div>
                <asp:Button ID="bntAdd" runat="server" Text="Add Control" 
                    onclick="bntAdd_Click" />
                    <asp:Button ID="btnShow" runat="server" Text="Show"/>
                <asp:TextBox ID="txtAns" runat="server" Text="">
            </div>
        </contenttemplate>
        
    
    </form>
</body>
</html>