Web Forms :: List Box Value Is Not Populated And Reflected In Code Behind With JavaScript
Mar 21, 2011
I have a listbox that I am populating at runtime with javascript. After the listbox is populated I am using a button to get that value. on button click when I am trying to get the value it is the listbox item count is 0, Can anyone tell what's wrong after t he javascript populates the code,I have written the code in button click :
for (int i = 0; listbox1.Items.Count - 1; i++)
{
string s = listbox1.Items[i].ToString();
}
the value of count is showing as 0, though it has the values populated. What I am missing ?
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 want to learn how to use form view but i can't find any tutorial that have a get data from database and display using form view or inserting data to database.
There are a few posts on the site about how to order by using lambda expressions however I cannot seem to get mine to work. I am trying to reorder a list that is already populated. Am i wrong in thinking that i can rearrange the order of this list using lambada expressions?
I have a panel with a detailsview that i use to create rows for table MMS_Projects.
I have another Panel in which i create a report of contents of this table along with dedicated controls for each (buttons to add elements to child tables like goals and tasks)
when i complete an insert into the projects table, the page re-posts and the dynamic projects report re-initializes (i added a timestamp at the top of the report to confirm that the page re-initializes). but the new row is not immdiately present.
if another control is clicked (causing another re-post), the new row shows up.
since i know the insert was successfull and that the dynamic report has been "re-init"-ed, i assumed there is a delay (one thread is still performing an insert while another is creating a report), so i forced a system.threading.thread.sleep(3000) in the creation of the report.
I am trying to pull data from my populated javascript table. How do I pull the value from a javascript row? I am using
for (var i = 0; i < rowCount; i++) { var row = table.rows[i]; //This is where I am having trouble var chkboxIndicator = row.cells[0].childNodes[1]; alert(chkboxIndicator); // if (chkboxIndicator == indicator && Checkbox.checked == false) { table.deleteRow(i); rowCount--; i--; } }
which has an alert message of "undefined". I tried .value and .text as well and no progress. How do I get the text from the childNodes?
How do I execute a function in JavaScript when a text box is populated with text? The text box with be hidden from the user. It will be populated by a USB magnetic card swiper.
Pseudo code:
<script language="javascript" type="text/javascript"> function MyFunction() { //execute this function when MyTxtBox is populated } </script> <asp:TextBox id="MyTxtBox" runat="server" Visible="false" />
When I use the code below an error accur when click add button to insert into sql because the selected value in DropDownList is back to --select-- Idon't know why it should be the the value I selectedbut when not use this code and bind the DropDownList using wizard it works but I need to use the code to make the first selection is --select--.
private void PopulateDropDownList() { string constr = ConfigurationManager.ConnectionStrings[1].ConnectionString; using (SqlConnection con = new SqlConnection(constr)) { using (SqlCommand cmd = new SqlCommand("SELECT Country_ID,Country_Name FROM Country", con)) { using (SqlDataAdapter da = new SqlDataAdapter(cmd)) {
My issue is similar to [URL] how-to-use-the-value-of-a-selected-value-from-a-dropdownlist-populated-with-ajax but I am using ASP.NET, not PHP. I have a dropdownlist that is populated by another dropdownlist's current value through ajax. So if DDL A is 'NY', DDL B is populated with different data relating to 'NY'. I need that data to be posted back to the server because this affects an SQLDataSource parameter. However, as far as I can tell, the value is always null after postback resulting in the gridview to be empty.
How do I execute an JavaScript function right when an ASP.NET text box control is populated and focus is still set? The onChange event will not work because I need to programmatically move focus to the next form element after the JavaScript function has executed.
Is is very similar to this question. The marked answer is correct for the context on the question, but after some more testing it did not exactly solve my current issue.
[URL] .... I Need to search record from GridView by using the textbox but not want to configure this with SQLDataSource Manually (Front End) therefore how to filter gridview from Codebehind.Â
I am using visual web developer 2010 and have a situation where if I make edits to either the master or default page text's, they are not refelcted in what is displayed when the site is run?
This is about as beginner as it gets regarding AJAX, but here it goes.I want to have one checkbox somewhere on an ASP.NET web form (ASPX). When the user clicks the checkbox, I want one of those spinning indicators to show.While that spinning indicator is showing, I want an update operation to occur in the database to reflect that the user has intended for that checkbox to be checked.
update MyTable set CheckboxChecked = 1Then, as soon as the update operation has completed (must be verified to actually have been written), I want that to be reflected in the checkbox by removing the spinning indicator and replacing it with the standard checked checkbox. I'm guessing this is done with an UpdatePanel and possibly an update statement followed by a looped call to a select statement... but I have never used AJAX before and have no idea how to go about it.
we are working on one of our site which is having lots of javascript code.but while testing one of our tester has disabled javascript in browser.so in this scenario javascript code is not working properly. So can any one let me know is thr any work around to run javascript code while browser javascript is disabled.
Now I want to attach to the click-event of every single li-element, so that if the user clicks on a div-element, detailed product-informationen should be loaded asynchronously into a details-pane. I know how I can use jQuery to invoke an action-method ajax-style and also how to display the json-result which contains the product-details, BUT I have no idea, how I could attach the onclick-event to every single div, so that I can use the productId to load the details.
I reordered some items in a listbox using Javascript. When I read the items in a postback in the code behind (ASP.NET), the order is in the original order. How do I get the same order as shown in the screen after Javascript manipulation?
I have an asp.net button, that when clicked calls a code behind function. The function does some evaluation, and then I want to call javascript from within this asp.net function.
This program in asp.net 2.0 is a Spanish/English Dictionary.
It consists of two textboxes,one button and a datalist. The datalist is bound to an acces database consisting of two columns; One Spanish and one English. When a user enters a Spanish word in textbox1 and clicks the button, the meaning of the word appears in textbox2. Now sometimes a user enters a word that is not in the database. I want, in this case, to have a javascript messagebox to popup saying “Either the word is not listed or misspelled”.
I tried several javascripts to popup in code behind but that did not work. I know that a clientside should be included but I am not able to do that.
The sub below is the one I am using to fetch the words and it is working perfect as long as I enter a word that is already in access database. The words in the rows in database are separated by hyphens so I am using a “Split” fuction which is also working perfectly.
i have a popup that is getting displayed when Save button is clicked. The popup has 2 buttons. Yes and No. No should cancel the popupand yes should take you to function in the code-behind say, btnSave_Click(object sender, Eventargs e). How is it possible.
