Web Forms :: Retrieve Dynamically Created Controls?
Sep 13, 2010
I am building a webform dynamically but when I go to get the values the placeholder has no controls. Every control added has an unique ID. Does anyone know what I am doing wrong (language is C#).
aspx page
<asp:UpdatePanel ID="upShoppingCart" runat="server" UpdateMode="Conditional" >
<ContentTemplate>
<asp:PlaceHolder ID="phShoppingCart" runat="server" />
<br /><asp:Button ID="btnUpdateCart" runat="server" Text="Update" OnClick="btnUpdateCart_OnClick" />
[Code]....
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Nov 22, 2010
I am using the code below to recreate a modalPopup window. At each UpdatePanel refresh I "lose" the window but I recreate it again after my Panel is updated. This gives me the impression that the windows is always open. The only problem is after I drag and drop it to a different location, the window is recreated back in its original location:
if ($find(MPIDList[clientID]) == null) {
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Sep 28, 2010
I'm creating an quiz application which queries the database and extracts the questions and choices. I use dynamically created controls such as a checkbox list and fill the values dynamically. How do I do this? Right now I have these functions:
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Mar 18, 2010
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[Code]....
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Jul 20, 2010
I have a tree view with checkboxes for leaf nodes. If i click on checkboxes, I am creating some html controls dynamically. And in other static button click event I need to get an ID's of those dynamically created controls.
My Code is:
.aspx
<asp:Panel ID="pnlOuter" runat="server" Visible="false" Width="650px">
<table>
<tr>
<td>
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May 28, 2010
I need to create web controls (e.g. label etc) dynamically.The problem is that for example,
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Mar 10, 2010
I was looking through my transcender exam kit for 70-562 and they say load dynamically created controls in the loadviewstateEvent. This should be CreateChildControls() instead, no?
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Jan 25, 2010
i create textbox dynamically (not in page_load)
for example
dim t as new textbox
t.text ="wywyr"
t.id="wrytwry"
panel1.controls.add(t)
after that when i want to get the value from this one i cant.
i searched all the controls that i add into panel1
For
Each Control
In panel1.Controls
Dim s
As
String = Control.GetType.ToString
and it doesnt show nothing
how do i get the value from the dynamically generated textbox ?
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Mar 21, 2011
I'm creating an quiz application which queries the database and extracts the questions and choices. I use dynamically created controls such as a checkbox list and fill the values dynamically. How do I do this? Right now I have these functions:
array_random_init(); this creates a 10 element integer array from 1-20
- extract_question(i): this extracts a question indexed at i in DB, I created the controls and set the appropriate text in this function.
- validate_question(i); this is called by button_click and validates the question i according to DB.
I understand I have to recreate the controls in Page_init on postback, but what should it look like? Do I need to add "if IsPostBack" in page_init, or do I create the controls in page_init() and reset their properties in page_load when I use extract_question(i)? Also, I cannot seem to clear the selected boxes on postback, I added page directive enableviewstate=false" but it doesn't work. What's the right way to do it?
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Feb 14, 2011
I have a website that sales associates access to view account information with clients. S.A's can only view information for accounts that they are tied to. Some clients have more than one account, S.A's can be tied to more than one account, but not all accounts of one client need to be tied to one S.A.
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On my Page_Load, I'm running this after the buttons and labels are displayed:
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Try
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Catch ex as InvalidCastException
Continue For
End Try
Next
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Mar 1, 2011
have some code which dynamically generates a number of drop down lists to provide the user with different options. The items in these drop downlists contain a value which is a unique id for that particular combination of options and a text component which just plain text but not neccessarily unique. I then have assigned a handler to these dropdownlists which is called on selected index changed to perform the relevant actions based on what options are selected. The problem is to make the system perform the correct action I need the unique ID from selectedValue of the drop down box but when it posts back it appears the selectedValue has been replaced to match the text of the item.
Dim dynDdl = New DropDownList()
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AddHandler dynDdl.SelectedIndexChanged, AddressOf dynDdl_selectedIndexChanged
[code]...
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Sep 17, 2010
dynamically HtmlInputCheckBox created and add in PlaceHolder(panel).
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Dec 1, 2010
What I am trying to achieve:I am trying to take the value of the selected index and depending on what this value is (e.g. the case selection in the code below) run a different query on the dataset and then create a repeater control dynamically to output each row with an item template
that I can use css to style.
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What I have done so far: [Code]....
What I'm struggling with at the moment is:
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[Code]....
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I am giving my code snippet for reference.
This is function to create Grid.
[Code]....
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Jan 11, 2010
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A piece of my code:
[Code]....
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Jun 17, 2010
I just can't wrap my head over this and don't have enough time to read long articles.
I already have an HTM Table on my form. I dynamically create New Roows and Cells and keep adding them to the Table .
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The form loads perfectly the first time. But when I change the value in a drop down, on the postback, I get a msg saying that " There are multiple controls with the same name 'txtCheckin' . How do I handle this?
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Jan 28, 2010
i am adding rows and cells dynamically to asp table control...and i wish to put extract a particular cell's of the row when clicked ...
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I want to create a gridview with the first column being the Job Number and then a variable number of subsequent column which are fordates. This grid is a data entry for hours worked on a particular date for a particular job. I wrote the code to get the correct number of columns and column headers but I am having trouble getting textboxes into the grid cells.
public partial class _Default : System.Web.UI.Page
{
#region constants
[code]...
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Jan 10, 2011
i am working on Accounting software.in this software i am to implement voucher entries form.In this form on page load a table (two rows and four columns) should be created after that one row should be appended to that table dynamically on button click event.
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Aug 9, 2010
I have a listview control which is created dynamically, it is nested inside a repeater's itemtemplate. I'm trying to attach a datapager to it, which is also created dynamically but the datapager will not display and the listview will just display all its records in its entirety.
[Code]....
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Mar 15, 2011
I have a menu. I use the menu's menuitemclick event to create a gridview (several actually) that is then added to a panel for display.The gridview paints perfectly until I try to add paging.I have successfully used paging and sorting declaratively for years, but this is my first attempt to do everything in code.When the gridview tries to databind, it throws an error:
[NullReferenceException: Object reference not set to an instance of an object.]
System.Web.UI.WebControls.GridView.get_StateFormatter() +25
System.Web.UI.WebControls.GridView.BuildCallbackArgument(Int32 pageIndex) +56
[code]...
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Jan 4, 2011
I am creating a project that dynamically creates radiobuttons. So far, i'm done with creating those radiobuttons dynamically. My problem is getting the values from those radiobuttons. To get those values, I need to click the submit button, however it seems that the radiobutton value or the radiobutton itself is lost after I click the submit button.
here are my codes, though not my exact codes, it follows the same logic...
protected void Page_Load(object sender, EventArgs e)
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Oct 4, 2010
I am using asp.net/c# application. In my application, I have a gridview.<asp:GridView id ="gv_QuestionList" runat="server"> </asp:GridView>In Code Behind, I created dynamic textboxes and DropDownLists on RowDataBound.
[Code]....
I have a Save button out side the gridview which stores all the row values into database. when I click the "Save" button, I lost dyanamically ceated controls like textbox,dropdown and values (on postback).How can i get all the dynamically created controls and values after the post back?
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