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ASP.NET C# - Dynamically adding table rows & cells issue.

Asked by orrsafety in Programming for ASP.NET, Microsoft Visual C#.Net, C# Programming Language

Tags: asp.net, dynamic controls, table, row, cell

I'm trying to click a linkbutton and have more rows added to a table via server side code. I will adding controls that I can iterate through later. Every time the link button it clicked, I want another NEW row to be added. However, when clicked... one new row is added, but that's it. When clicked again, it seems that the row is that is just added is lost and the same row is re-added. ViewState not being enabled doesn't seem to be the problem, as I have it enabled ever where I can think of. Maybe my understanding of how postback and viewstate works is incorrect. I would expect that when you have a session on the server and viewstate enabled that when a control is dynamically added via postback, it would persist until you leave the page. Anyone have any ideas? I'm sure someone has come across this before.

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             <%@ Page Language="C#" EnableViewState="true" EnableSessionState="True" AutoEventWireup="true" CodeFile="ajaxtest.aspx.cs" Inherits="ajaxtest" %>
 
<!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>Untitled Page</title>
</head>
<body>
    
    <form id="form1" runat="server" enableviewstate="true">
  
        <asp:LinkButton ID="LinkButton1" runat="server" onclick="LinkButton1_Click">LinkButton</asp:LinkButton>
        <asp:Table runat="server" ID="MyTable" EnableViewState="true">
            <asp:TableRow>
                <asp:TableCell>
                Exsisting Row
                </asp:TableCell>
            </asp:TableRow>
        </asp:Table>
        
        
    
    </form>
</body>
</html>
 
 
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
 
public partial class ajaxtest : System.Web.UI.Page
{    
    int Counter = 0;
 
    protected void Page_Load(object sender, EventArgs e)
    {
        
 
    }
 
    protected void LinkButton1_Click(object sender, EventArgs e)
    {
        TableCell NewCell = new TableCell();
        TableRow NewRow = new TableRow();
 
        Counter++; 
        NewCell.Text = "Dynamically Added " + Counter.ToString();
        
        NewRow.Cells.Add(NewCell);
        MyTable.Rows.Add(NewRow);
    }
}
           
         

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ASP.NET C# - Dynamically adding table rows & cells issue.

Asked by orrsafety in Programming for ASP.NET, Microsoft Visual C#.Net, C# Programming Language

Tags: asp.net, dynamic controls, table, row, cell

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