Web Forms :: Adding Dynamic List And Elements In Runtime

Nov 5, 2010

In my Page_Load() event, I'm calling a Sub (in a module UserMenu.vb) that reads an XML file which has the user menu entries. The final menu should be an <ul> with several <li>, some of them with anidated <ul> within. As I understand, I may use a asp:Panel in my page to position a container for this elements I read and in this sub I try to add them using new BulletedList and new ListElement BList.Items.Add(LItem)), but when I get to Panel.Controls.Add(BList) it throws an error that says BList should be inserted in a Form. Why? Aren't they just <ul> and <li>? What other alternative I have to create <ul> and <li> in a specific part of my page?


Load Dynamic List Of Elements AFTER FINISHED Loading Of Several Form Elements?

Mar 1, 2010

I have...a dynamic populated select box several input boxes a submit button form fields are loaded initially using cookies several dynamic populated divs

I want... start loading the content of my DIVs after all FORM elements have been loaded completely (= filled with data, select boxes are populated)

Sample code:


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Web Forms :: Create Dynamic Elements Within Div

Feb 28, 2010

i'm trying to create a mini-forum (like facebook or twitter ...), so the user logs in and enters a message, that gets stored on sql server and im now trying to display it in the page, by looping through all the relevent records the code that is corrects is:


so here i created a container, now i need to add other content within that div i tryed the samething


but of course that did not work,does anyone know of this (elements within element) can be achieved.

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Web Forms :: Dynamic Addition Of Span / Div Elements

Feb 28, 2011

i have a problem with creating dovs based on the data in the xml file. What i need to do is to create a page where the xml file is loaded and if the give Node has childnodes it should be displayed as a link and after clicking a span or a div with childnode's value should appear under it and afte a second click it should "fold" back. I van use the __postback function from js but the problem is in the dymanic creation of the "child" divs. A portion of the xml file:

<Car name = "Ford">
<Type Name = "Escort">
<Description>Some description of the car</Description>
<Type Name = "Puma">

Given the sample above the value "Escort" should be displayed on page as a link and after clicking a div containing value of the Description node should appear but value "Puma" should appear in normal text as it doesn't have children.

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Web Forms :: Adding Elements Before And After Link Element In Menu Control

Dec 6, 2010

I wonder if there is anyway to actually add a HTML element before or/and after the actuall <a>-element thats rendered by the Menu control. For instance I whould like my out put HTML to look like


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Forms Data Controls :: Adding Dynamic Button To Dynamic Table

Aug 10, 2010

I have a dynamic Table which contain 8 rows and 8 Colums

Table t = new Table();
TableRow rr = new TableRow();
TableCell cc = new TableCell();
and in the each Cell CC I add a dynamic Button(Or Linkbtn)
LinkButton LB1 = new LinkButton();
LB1.Text = "AM";
LB1.ID ="Link1";
LB1.Click += new EventHandler(LB1_Click);

i have a table with 8 rows , 8 colums and each cell contain a LinkButton (which diffrent in IDs) I want to add Lable in the same cell of this LinkBtn(LB1) which it clicked but I cann't What shoud I write here?

void LB1_Click(object sender, EventArgs e)
// throw new NotImplementedException();

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Web Forms :: Adding Dynamic Fields And Dynamic RequiredFieldValidators?

Jul 28, 2010

So am adding fields in the code behind and now want to add required field validators. Kicker, I think comes into play becasue all this is in a master page. So even though I may set the id of the textbox to say tb4, it's no longer tb4. So when I add the required field validator and tell it the control to validate is tb4, I get the yellow screen of death telling me thtat tb4 does not exist... cause it's the long huge master page ID. What do I do?

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Web Forms :: Adding DropdownList At Runtime?

Dec 28, 2009

I have one table (StuID, StuName, Sex, Dob). I want to develop web page with advanced search. My purpose aims users to search data with flexible fields. Example: User can search by StuID, StuName, Sex or Dob. If I have many tables, I need to write code redundancy.

Avoiding the issue, I want to add dynamic controls dropdownlist withing field binding).

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Web Forms :: Adding New Content In Runtime

Apr 22, 2010

I am showing data from different databases in a web part. Would it be possible to dynamically add and remove that data including the layout that that <DIV> has and would I go about in doing this?

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Web Forms :: Adding Controls At Runtime

Feb 28, 2011

Currently a page loads usercontrol via


and Test.ascx has the following event


How can I add this part OnEvalCommand="Eval_Command" to the control at runtime. I am familiar with setting properties but not events.

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Web Forms :: Adding A New Row To A Table At Runtime?

Apr 14, 2010

Im using VS 2008 and have created a Visual C# ASP.Net Web Application and have a Table on the Page (Created at Design Time).

Im Trying to add rows at runtime when the user presses a button but it creates one row then none after.


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Web Forms :: Adding New Row During Runtime Using Asp Table?

Nov 24, 2009

Is there a way i can add during runtime a new row to a asp table control whenever i click a button. I tried this code but it only works during my 1st click. after that no new rows can be added. Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim newr As New TableRow For i As Integer = 1 To 6 Dim newc As New TableCell newc.Controls.Add(New LiteralControl("cell " & i)) newr.Cells.Add(newc) Next Table1.rows.add(newr) End Sub

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Create Dynamic Anchors Based On HTML Elements?

Nov 7, 2008

My question is. I wanted to create "jump links"[URL] at the top of the page, dynamically. I have a list of information broken up by <h2> tags.

<h2 id="jobs">Jobs</h2>
<h2 id="where">Where to work</h2>
<h2 id="about">About Us</h2>

I would like to able to generate the following on the fly:

<a href=[URL]
<a href="[URL]Wher to Work</h2>
<a href="[URL]>About Us</h2>

I am an ASP.NET noob, so, I'm not sure the best/smartest way to go about this. I kow that you could do in Javascript, but i'm not sure that's the best.

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Web Forms :: Adding List Items To Drop Down Control From Generic List?

Feb 6, 2010

I have the following Students class:


I need the 1 since it's a foreign key in another table. For the life of me, I can't get this to work like this.

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Web Forms :: Adding Nodes To A SiteMap At Runtime?

Jun 26, 2007

I'm using a SiteMapPath and sitemap files and all works great but I would like to add additional items at runtime to a sitemap. Is this possible?



Show the Breadcrumbs as:

Home > Profile

But in profile I have a change password button that switches to a change password view and I would like breadcrumbs change to:

Home > Profile > Change Password

"Change Password" would not be clickable as it is a view within the ~Profile/Default.aspx page

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Web Forms :: Adding Additonal With Contents In Runtime?

Dec 14, 2010

to duplicate an already existing <div> with its existing controls multiple times on one form. I have a situation where I have a group of controls contained in one <div>, but the user might need to add more information in the same format so I would like to just have them click a button to add another component and the same set of controls will be duplicated below it.

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Web Forms :: Adding Webpart During Runtime Without Personalization?

Sep 18, 2009

im using ASP.Net 2.0, i wrote a code to dynamically add the Webpart but encountered following error.

"Personalization is not enabled and/or modifiable. The Enabled property must be set to true, and a registered personalization provider must be selected. The current user must be granted the right to modify personalization state."

i know its something about turning on personalization at WebpartManager, but my application dont need to have personalization. how to add webpart dynamically without personalization turned on??

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Web Forms :: Assign Value To Dynamic Textboxes At Runtime

Jul 24, 2010

I am generating dynamic textboxes with the ids as follows table row 1:

no1,name1,addressline11,addressline21,city,pin,communicationAddress1(here the row count I am appending at last to the control id's)table row 2: no2,name2,addressline12,addressline22,city,pin,communicationaddress2
table row 3: no3,name3,addressline13,addressline23,city,pin,communicationaddress3 and so on....

A new will be created when user hits enter key in the last textbox i.e., communicationaddress.For validations I have used java script. Now my requirement is when user types the address line the content of the textbox should be copied to communication address.

communication address = addressline1+addressline2+city+pin

so in theabove four textboxes when the user hits the keys the matter appending to the communication address with ',' seperated. I acheived this through key press event in java script..................

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VS 2010 Adds Colgroup - IDE Stop Adding Extra Elements?

Jan 20, 2011

I have a code like the following:

<col width="50%" />
<col width="50%" />
blah blah

When i switch to design and get back to source view it added the colgroup so my code looks like this:

<col width="50%" />
<col width="50%" />
blah blah

how to make the IDE stop adding these extra elements? i changed the Target Schema to all possible combination and it didn't help.

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Performance - Page Contains Dynamic Elements - Loading Takes Time

Feb 10, 2010

I am dynamically creating a table of checkboxes on my test.aspx page. The dimensions (row and column count) of the table are determined by querying the database. In test.aspx page, I do the following:

<script language="C#" runat="server">
protected void Page_Load ( object src, EventArgs e ) {
//Query the database to get the data for rows and columns
CheckBox[] chkBox = new CheckBox[rows * columns]; //creates a collection of checkboxes
//Iterate over the query set in a double for loop to create dynamic checkboxes

Right now I have the number of rows=20 and columns=10, but it can increase (with the columns more likely). I used the Net tab in Firebug to ascertain the time taken by different events and found that GetTest.aspx is taking close to 4 minutes, which is too long a time to wait. Is there a way to being down the page load time? Is my approach to create dynamic check boxes correct?

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Forms Data Controls :: Adding Rows To GridView During Runtime?

Dec 10, 2010

I am creating a web application that displays URL to users in a GridView. The application has a code behind that will be doing the processing before it can return me a URL. This is done in a loop. So it looks something like :


What I wanted is to make the Gridview always update the rows everytime an item in the loop is done instead of waiting for the loop to finish.

For now, the application will only display the whole table until the code/loop finishes. I'm very much aware that this will happen because the web page is static in the first place. Does anybody know how to do this?

I have tried of using iframes(I thought of reloading the frame so the whole page wont reload again and a new GridView table would appear because of the code in Page_Load event because I tried placing the data in a separate static class and the GridView.aspx page will just retrieve the values upon every reload)

and I'm not sure how to implement AJAX/Javascript with this. Is Animation involved in this kind of situations?

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Web Forms :: Adding Or Removing A SiteMapNode To A Menu Control At Runtime?

May 27, 2010

I need to have a siteMapeNode for a menu control to only show up during development.

The following node would be in the web.sitemap file.


I can either put this node in my web.sitemap file and remove it in release builds.

Or Add the node in debug builds.

Probably done in PreInit or Page_load events.

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Forms Data Controls :: Get Dynamic Textbox Control Value At Runtime?

Jan 28, 2010

I have a two buttons ( button1 and button2 ), a panel ( panel1 ), a label ( labe1 ) on my Web page ( coded with asp.net and c# ). I want to create 2 textboxs on my page when I click on button1 ( button1_click ).

After that, when I click button2 ( button2_click ), I want to get data of textbox (added on runtime) and write them on label1.

This application is part of my master application. This is very important for me...

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Forms Data Controls :: Creation Of Dynamic Gridview At Runtime?

Jan 11, 2010

I have created a gridview at runtime. its working fine when i load the grid first time. after when i am selecting next value from ddl to load grid according to that option(selecting from dropdown list and coresponding values showing in grid) showing error that "A field or property with the name 'datafield name' was not found on the selected data source."

might be i am getting this error becuze the privious value is not being cleared"

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MVC :: Dynamic Forms, Microsoft JScript Runtime Error Is Null Or Not An Object?

Sep 24, 2009

I work on some case studies for a project using asp.net mvc, nhibernate and other fancy stuff :)

My current problem is related to partial forms and Ajax, but as far as I found similar problems it's ajax + mvc.

There is a class person and a class address. The person has one or many addresses.

On the input form I would like to add partial forms for addresses without saving the person before, keeping post-backs on a fair amount.

I have a Javascript-library which provides me the logic to have several partial forms on the same page.

Everytime I click the link I get "Microsoft JScript runtime error: is null or not an object".

If I skip this error the code runs still as expected. It adds a new partial form and enumerates them.

Here is my action link:


Some posts about this error mentioned the OnSuccess function but I tried


Here is my controllers action:


And here the javascript:


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Forms Data Controls :: Bind Dynamic TextBox Control At Runtime?

Feb 17, 2010

I am Developing a database web applicationI am Creating web controls on page at runtime i.e in Page_Init event. No textbox are placed on .aspx page at design timeI have a datatable filled with a single record.now i want to bind a textbox (created at runtime) with a column of datatable so that when a page is loaded value in datatable's column is displayed in textbox.Other Important thing i want is when i make any changes in Textbox, It should be reflected automatically in a column to which textbox is binded. So while saving records i can save it directly from datatable. I dont want to write following tedious code before savinge.g.

DataRow mDr = Datatable.NewRow();
mDr["EmpId"] = TxtEmp.Text
mDr["EmpName"] = TxtEmpName.Text

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Using Javascript (DOM) - User To Drag Individual List Elements From One Box To Another

Jul 6, 2010

I have an asp.net page with several list boxes. I would like to include some javascript on the page that allows a user to drag individual list elements from one box to another. On a normal web page, the script to do this is reasonably simple, however, with the element IDs generated by ASP.NET, I don't know what identifiers to have my script look up?

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C# - Iterate Through DataTable To Find Elements In List Object?

Mar 24, 2010

As I iterate through a DataTable object, I need to check each of its DataRow objects against the items in a generic string List. I found a blog post using the List's Find method along with a delegate, but whereas that example has a separate class (Person), I'm attempting something like the following using an instance of the string object:

// My definition of the List object.
List<string> lstAccountNumbers = new List<string>();
// I populate the List via its Add method.
foreach (DataRow drCurrentRow in dtMyDataTable.Rows)
if (lstAccounts.Find(delegate(string sAccountNumber) { return sAccountNumber == drCurrentRow["AccountNumber"]; })

However, with this syntax I'm receiving "Cannot implicitly convert type 'string' to 'bool'" for the if block. what I'm doing wrong and how best to accomplish what I'm trying to do?

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Web Forms :: Drop Down List Is Dynamically Populated At Runtime?

Jul 5, 2010

I've got a dynamically populated drop down list and was wondering if web crawlers are able to see dynamically rendered data? Here is my static html below, and the end result to the end user is a drop down list that's populated from my SQL query within my datasource below.

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Adding User Controls On Runtime?

Nov 16, 2010

I'm trying to add some user controls on a page. Thats easy, I just do it like this.

UserControl block = (categoryblock) LoadControl("categoryblock.ascx");

But i want to access the label controls and more that are inside the categoryblock.ascx. How would i do that? I cant do it like this,

block.l_itemName.text = "blabla";

I managed to user FindControl("l_itemName") but i would rather like to have the intellisense.

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.net - Adding Control To A Panel At Runtime?

Dec 16, 2010

I'd like to add a control A (that exists on a page) to a Footer user control's panel. If I create the control A dynamically and add it, I don't have issues. But I would like to avoid adding this dynamically.So, I defined control A in the aspx page and in the code behind, I got reference to the footer's panel and did a Controls.Add() It works fine, but postbacks from this control has strange behavior (could be due to viewstate?) as it doesn't execute some code that is on the page with a !IsPostback condition

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Adding Meta Tag With Javascript On Runtime?

Dec 20, 2008

I want to add Meta tag of page by javascript is good or bad for google search engine .

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Adding Silverlight Control At Runtime?

Nov 1, 2010

I want to add a silverlight control to a div panel at runtime (dynamically) ( on an aspx or user control). How can one achieve this?

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Is This Possible To Create A Runtime Dynamic Variable

Jun 15, 2010

I want to create dynamic integer variable for each role in this loop. Which I will user later for totaling item count in other logic.

Is this possible to create a runtime dynamic variable?

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MVC :: Dynamic Columns For View At Runtime?

Nov 2, 2010

I finally got the DynamicLibrary issue nailed down I asked about in another post. The basic gist is that there's a project table that renders to a View. The user can, at runtime, choose the columns to display and the order in which they should be displayed. Here's the method that does the work:


This works great. The SerializeToCsv() method is an extension method I created for generic string lists. I used the jQuery UI bundle to create a sortable set of 'ul li' elements with checkboxes in them, which allows users to select which columns to show, and in what order. When the post happens, the current order the elements are in on the View is the order in which they're added to the FormCollection, so I don't need to do anything special to track ordering. So far, all is working according to my evil plans.

The problem I have now is how to render this in the View dynamically at runtime. It's very easy to check for the Model's property values and display them selectively, but not to reorder them. Off the top of my head, I can think of a few ways to do this, but none of them are very attractive. The first idea is to send the Model in as a collection of objects. The query that returns the data as shown above already has the columns returned in the order the user chose, so I could wrap them in objects and render them as string representations in the View. This is clunky, ugly, and won't give me the support for the actual data types boxed in the objects. I'd have to convert them all to strings in the service class and then wrap them in objects, because the View wouldn't know if it was dealing with a DateTime, string, int or whatever. I REALLY don't want to take this route. Can anyone give me some advice on a better way to reorder and selectively display columns at runtime?

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Forms Data Controls :: Unique Values In Dropdown List At Runtime?

Oct 4, 2010

In given code finally I want to populate unique values at runtime in 2 drop downlist.

protected void Page_Load(object sender, EventArgs e)
Response.ExpiresAbsolute = DateTime.Now.AddMonths(-1);


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Web Forms :: Adding A Dynamic Dropdown To The Page?

Jan 7, 2010

I got a problem in adding a Dynamic Dropdown to the asp page.

Here is the description:

Im trying to create Dropdown dynamically based upon the values returned from the database.

For example,

if database returns three records like A,B,C(These are the values to be selected of the drop down)

I wrote a Method which will accept the

private void addDropDowns(int iPhyLoc,int iDdlCnt,string sAxnCd)
DropDownList ddlMitigtAxnCd = new DropDownList();
ddlMitigtAxnCd.ID = "ddlMitigtAxnCd" + iPhyLoc.ToString() + iDdlCnt.ToString();
ddlMitigtAxnCd.SelectedIndex = ddlMitigtAxnCd.Items.IndexOf(ddlMitigtAxnCd.Items.FindByText(sAxnCd.Trim()));
ddlMitigtAxnCd.Attributes.Add("style", "font-family : Arial, Helvetica, sans-serif;"+"font-size : 10px;color : black;");
this.FindControl("PnlAxnCds" + iPhyLoc.ToString()).Controls.Add(ddlMitigtAxnCd);


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AJAX :: Error When Adding Handlers At Runtime

Jan 15, 2010

I have have two radio button lists that need to be mutally exculisve, i.e when one is clicked the other one neesd to be cleared, my further problem is beause they are in a formview I had to add handlers to clear all the controls in the other list when the one is clicked and vice versa. here is the code below Now the code works but one of the testers found that if you click back and forth around twenty times you get the above java error:

Exception message: Maximum request length exceeded

my though here is the handler is being added to many times ? but even if I remove the handler after the process is complete I still get the same error.


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MVC :: Adding Image To Asp:Content Control At Runtime?

Jun 7, 2010

I am converting a web forms site to MVC and there are a lot of pages all with an individual screenshot image on. Rather than have a separate page for each screenshot image, I though a better way to do this would be to have one page, and to pass the image details into a Controller method, and then set the src value of the <img> in my code. Does anybody know how to do this, and even if it is a good idea to be making reference to UI elements in my Controller code?

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AJAX :: Interesting With Adding Tab Panel At Runtime?

Nov 16, 2009

I've built a web application that's 95% dynamically created.My actual design-time ASPX page has a tab container (which acts as the container for the whole page).Inside the tab container is a tab panel.It's my administrator tab panel.On form load, I store the tab panel object in a session variable,then utilize "tcFrame.Tabs.Remove(tpadmin)" to remove it from the tab list.After dynamically building my tabs/content, the last thing I do in form_load is "tabP = Session("admintp")" and "tcFrame.Tabs.Add(tabP)"

-it works. kind of.The admin tab is loaded - but it's loaded underneath the content from the activetab listed above (the first tab generated).If I click on any tab BUT the admin tab, the admin content remains on the screen. As soon as I click on the admin tab, it goes away.

I can fix this in either of the two scenarios:

"If user.isinrole("admin")" - then add tab & set the activetab = tpAdmin.

I can also go "TcFrame.activetab = tpadmin", then "tcFrame.activetabindex=1"

While I could do either of these, I'm curious to know what's causing this (e.g. a logic error?).

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