Web Forms :: How To Find A Dynamically Built Control In Webpage

Feb 18, 2011

In my one asp.net web page by VS 2008 I dynamically creates a set of RadioButtonList and TextBox by objects


The current issue is I can load the web page with a set of RadioButtonLists and TextBoxs but can't find the these dynamically built controls by Me.FindControl("rdoTask" & ID) in aspx.vb file to save info assigned to these controls.

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I have a web page "Survey.aspx"

This page is in a MasterPage.

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This is my Survey.aspx layout code


This is my usercontrol layout code



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Line: 938

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How To Use The FindControl Function To Find A Dynamically Generated Control

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I have a PlaceHolder control inside of a ListView that I am using to render controls from my code behind. The code below adds the controls:

TextBox tb = new TextBox();
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TextBox tb = ((TextBox)di.FindControl(quest.ShortName.Replace(" ","")));
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For some reason when I look at the controls in the ListViewDataItem it has the ClientID:


Why would it be changing Numberofacres to ctl00? Is there any way to work around this?


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If so am I just SOL when it comes to retrieving the values in my dynamic controls from my OnClick event?


So i changed the code i had in my Page_Init event from:

protected void Page_Init(object sender, EventArgs e)
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Has anybody seen this? Or is it a requirement that you can only compile deployment projects as the super user? That cannot be right.I've been thrashing for more than five days and for the life of me cannot figure this out. Of course, I can run as the super user when developing, but I thought the new security model in Win7 was designed exactly so you don't have to.

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I have a table control that I am building dynamically and inside one cell I am placing a LinkButton inside it and wiring up an event. Although the event for the LInkButton never fires.


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I have a dialogue window that contains an Accordion Control that is dynamically built. The only thing that appears on my source page is the opening and closing tags for the control. The panes and the controls that appear on the panes are all added dynamically based on records in a database.

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I want to change the text of the user name text box which is inside a log in view on selected index chaged event of a drop down list.

this is my code:


but both ddl and tb are null

Anyone knows how can I find the controls in code behind?

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Web Forms :: Can't Find Controls That Created Dynamically

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i create textbox dynamically (not in page_load)

for example

dim t as new textbox
t.text ="wywyr"

after that when i want to get the value from this one i cant.

i searched all the controls that i add into panel1

Each Control
In panel1.Controls
Dim s
String = Control.GetType.ToString

and it doesnt show nothing

how do i get the value from the dynamically generated textbox ?

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