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?
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)
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:
[Code]....
so here i created a container, now i need to add other content within that div i tryed the samething
[Code]....
but of course that did not work,does anyone know of this (elements within element) can be achieved.
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> <Type Name = "Puma"> </Type> </Car>
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.
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
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"; cc.Controls.Add(LB1); rr.Cells.Add(cc); LB1.Click += new EventHandler(LB1_Click); t.Rows.Add(rr);
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?
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?
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?
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.
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..................
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 } </script>
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?
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 :
[Code]....
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?
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...
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"
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.
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?
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"]; }) { Found_DoSomething(); } else { NotFound_DoSomethingElse(); } }
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?
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.
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
