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ASP .NET Foreach TextBox Control In Html Table?

Posted on 2012-09-17
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Last Modified: 2012-09-18
Not sure why this is not working. I have several asp:TextBox in html table within asp:Form like so. Doesn't error though.

</head>
<body>
    <form id="form1" runat="server">
    <div>
 <table id="table1" runat="server" >
            <td >
                    <asp:TextBox ID="textBox1" runat="server" Enabled="False" EnableTheming="True"
                        MaxLength="1" ReadOnly="True"></asp:TextBox>
                </td>etc.....

Codebehind

                HtmlTable table = (HtmlTable)Page.FindControl("table1");
                List<string> txtList = new List<string>();
                foreach (Control ctl in table.Controls)
                {
                    if (ctl.GetType().ToString() == "System.Web.UI.WebControls.TextBox")
                    //if(ctl is TextBox)
                    {
                           string s = ((TextBox)ctl).ID;
                            txtList.Add(s);
                      }
                }      

                foreach(string id in txtList)
                {
                    System.Web.HttpContext.Current.Response.Write("TextBox.ID=" + id + "<br>");
                }
0
Comment
Question by:pointeman
2 Comments
 
LVL 25

Accepted Solution

by:
Luis Pérez earned 2000 total points
ID: 38408462
That's because when you're looping thru the table .Controls property, what you're really doing is looping thru the rows collection of the table. But the textboxes are not directly inside the table; they're inside cells that are inside rows that are inside the table. So you must do something like this:


HtmlTable table = (HtmlTable)Page.FindControl("table1");
foreach (HtmlTableRow row in table.Rows)
{
    foreach (HtmlTableCell cell in row.Cells)
    {
        foreach (Control ctl in cell.Controls)
        {
            if (ctl.GetType().ToString() == "System.Web.UI.WebControls.TextBox")
            {
                //...
            }
        }
    }
}

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Hope that helps.
0
 

Author Closing Comment

by:pointeman
ID: 38409115
Most excellent! Thx
0

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