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Getting value of properties of dynamicly created controls in asp.net

Answer 1

A:

hi,

So Im not so much an expert so this isn't a complete answer ... From what I see its not a dynamically created control, I bet you mean the size is dynamic? Since it would change depending on what is inside?

I wrote some code with JQuery that gets the width of a td and set a hidden value to it and then get the value of that hidden field from asp.net. There could be better ways send the value from js to asp.net

One more thing, because of the postbacks, i think, try clicking the button twice. (Again maybe someone smarter can answer why that happens)

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="testing._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
<html xmlns="http://www.w3.org/1999/xhtml"&gt;
<head runat="server">
    <title>Untitled Page</title>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js" type="text/javascript" />
</head>
<body>
    <form id="form1" runat="server">
    <asp:Button ID="Button1" runat="server" Text="Button" OnClick="click" />
    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
    <asp:HiddenField ID="hid" runat="server" />
    </form>
    <table>
        <tr>
            <td id="image2">
                <img src="http://i38.tinypic.com/2el8jfb.jpg" />
            </td>
        </tr>
    </table> 
    <script type="text/javascript">
 $(document).ready(
 function() {
 var w = $('#image2').width();
$("#hid").val(w);
 }
 );
    </script>
</body>
</html>

 protected void click(object sender, EventArgs e)
        {
            TextBox1.Text = hid.Value;
        }

I thought of going all server side, using control with an id and runat server, but when I access that image through code behind with imageTD.Width.Value, it turns out 0, maybe someone can figure why that is...

Really hope that helps you! =)

giddy 2010-10-20 15:28:57

Answer 2

A:

I belive you can use Repeater1.FindControl and find your control as long as you have your sender e from the row command (maybe you will need to add a delegate the preInit to get it to fire.). You will have to cast it something like this.

Image test = (Image)e.Item.FindControl("youImageName");

Kirit Chandran 2010-10-21 17:48:51

Answer 3

A:

The answer is very simple: you can't archive this in server-side.

Kiennx 2010-10-25 09:01:31

Answer 4

+1 A:

Alexander Pavlenko 2010-10-28 11:01:27

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Getting value of properties of dynamicly created controls in asp.net

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