AJAX DropDownList Won't Populate - Error500.. Code Is Working ?
Oct 1, 2010
Here's what I have. I was able to debug and traverse through the webservice and return teh array back into the first call method of: return new CarsService().. But back in the page_load method, I can't get it to update and show up in the page.
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<cc1:CascadingDropDown ID="CascadingDropDown1" runat="server" TargetControlID="DropDownList1"[code]....
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Jul 26, 2010
I have a very long list of items for a dropdownlist. As the list is very long, I would like to only show the items in the list if the user actually clicks on the dropdownlist to expand it. I found various tutorials on how to use AJAX with cascading dropdownlists but none explaining if it is possible to have just one dropdownlist which gets populated with AJAX when the user expands it. Are there any extenders coming with the AJAX toolkit that I missed? What would be the best way of achieving this?
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Feb 11, 2011
I am working on a project where the customer has a large database of products, they want to select the product by the id number and I thought it best that the description also show up. What I have is a dropdownlist that is linked to the id number in the database table and that works just fine. My problem comes when populating the corresponding description from the table into either a textbox or label(doesn't matter which one I use) I can accomplish this without ajax just fine but we would like to reduce the postbacks to the server. I have never used ajax before Here is my code from the aspx file.
[Code]....
Here is the code in the cs file
[Code]....
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Mar 2, 2011
I am trying to get two cascading dropdownlist to work but cannot get either to populate. How do I de-bug this? I'm not getting any errors, just blank dropdowns.
I've been trying to fill in webservice from SQL Server. But in-case this was the problem. I found an example on this site to fill with test values, but this still does not work. Since I cannot even get first to populate, to simplify I'm just giving code for first dropdown and its function(s)
[code]....
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Sep 28, 2010
I'm using Ajax to dynamically populate a DIV. I have each page content stored in XML files as CDATA. When a user clicks on a link from the navigation bar, the Ajax loads the XML for that particular page, parses it, and populates the DIV with it's content.
Everything is working GREAT, except for one thing. I have a jQuery modal popup whose markup is loaded from that page's XML file. The .js and .css files from the jQuery plugin are all loaded, and when this is HARD CODED (i.e., not loaded from XML), it works fine. But when it's loaded from the XML, the modal doesn't work.
When the page is loaded from the XML file- What the page is supposed to do is load the HTML from the XML file, which it does, and there's a hyperlink that when clicked, it's supposed to create the modal popup window. Instead, clicking on the link does NOT fire up the modal popup window.
When the page is hard coded- it does everything it's supposed to do.
A live example is at:
http://mikemarks.net/clientSites/tabras/
Click on "The Band", and at the bottom you'll see the hyperlink called "Demo". Clicking on that should bring up a modal popup window, but instead as you can see it just takes you to the top of the page.
Below is my markup (notice the div id="copy", which is the placeholder for my HTML content that's loaded from the XML file), my Ajax JavaScript code, and my XML file (which is shown as the markup that's loaded into the div id="copy").
<div id="leftTwoThirdsColumn">
<div id="menu">
<ul class="menu">
<li style="width:65px;"><a id="default" href="#" onclick="makeRequest('xml/default.xml');"><span>Home</span></a></li>
<li style="width:65px;"><a id="lyrics" href="#" onclick="makeRequest('xml/lyrics.xml');"><span>Lyrics</span></a></li>
<li style="width:110px;"><a id="merch" href="#" onclick="makeRequest('xml/merch.xml');"><span>Merchandise</span></a></li>
<li style="width:93px;"><a id="bio" href="#" onclick="makeRequest('xml/bio.xml');"><span>The Band</span></a></li>
<li style="width:80px;"><a id="contact" href="#" onclick="makeRequest('xml/contact.xml');"><span>Contact</span></a></li>
<li style="width:150px;" class="last"><a id="friends" href="#" onclick="makeRequest('xml/friends.xml');"><span>Friends of Tabräs</span></a></li>
</ul>
</div>
<br /><br />
<div id="copy">
</div>
</div>
function makeRequest(url)
{
if(window.XMLHttpRequest)
{
request = new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
request = new ActiveXObject("MSXML2.XMLHTTP");
}
sendRequest(url);
}
function sendRequest(url)
{
request.onreadystatechange = onResponse;
request.open("GET", url, true);
request.send(null);
}
function checkReadyState(obj)
{
if(obj.readyState == 0) { document.getElementById('copy').innerHTML = "Sending Request..."; }
if(obj.readyState == 1) { document.getElementById('copy').innerHTML = "Loading Response..."; }
if(obj.readyState == 2) { document.getElementById('copy').innerHTML = "Response Loaded..."; }
if(obj.readyState == 3) { document.getElementById('copy').innerHTML = "Response Ready..."; }
if(obj.readyState == 4)
{
if(obj.status == 200)
{
return true;
}
else if(obj.status == 404)
{
// Add a custom message or redirect the user to another page
document.getElementById('copy').innerHTML = "File not found";
}
else
{
document.getElementById('copy').innerHTML = "There was a problem retrieving the XML.";
}
}
}
function onResponse()
{
if(checkReadyState(request)) {
var response = request.responseXML.documentElement;
var root = new Array();
root = response.getElementsByTagName('');
//alert("Total Number of HTML Elements Found: " + response.getElementsByTagName("").length);
var html = '';
for (var i = 0; i < root.length; i++) {
var tagName = response.getElementsByTagName("").item(i).nodeName;
var tagObj = response.getElementsByTagName("").item(i);
html += tagObj.firstChild.nodeValue;
}
document.getElementById('copy').innerHTML = html;
}
}
<div style="padding-top:5px; margin-left:auto; margin-right:auto; text-align:center;">
<img src="images/ShawnBioActive.png" />
<img src="images/JasonBioActive.png" />
<img src="images/WillBioActive.png" />
<img src="images/RasoulBioActive.png" />
<img src="images/bioStrip.png" />
<div id='basic-modal'><h3>Basic Modal Dialog</h3><p>A basic modal dialog with minimal styling and no additional options. There are a few CSS attributes set internally by SimpleModal, however, SimpleModal relies mostly on style options and/or external CSS for the look and feel.</p><input type='button' name='basic' value='Demo' class='basic'/> or <a href='#' class='basic'>Demo</a></div><script type="text/javascript" src="../js/modal/jquery.simplemodal.js"></script><script type="text/javascript" src="../js/modal/basic.js"></script><link type="text/css" href="../css/modal/demo.css" rel="stylesheet" media="screen" /><link type="text/css" href="../css/modal/basic.css" rel="stylesheet" media="screen" /><script type='text/javascript'>jQuery().ready(function () {$('#basic-modal-content').modal();});</script>
<div id="basic-modal-content"><h3>Basic Modal Dialog</h3></div><div style='display:none'><img src='images/modal/basic/x.png' alt='' /></div></test2>
</div>
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Oct 5, 2012
there is a radio button, a dropdownlist. radiobuttons are OY, OTY,VDA ( in my database there are fields named OY.OTY,VDA) if i select OY in my radio button the data should be displayed from field OY in dropdownlist and if i select OTY in my radio button the data should be displayed from OTY field in dropdownlist is it possible. there is a sqldatasource for dropdownlist .
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:MS16ConnectionString %>"
SelectCommand="SELECT DISTINCT OY FROM COURSE_INTAKE">
</asp:SqlDataSource>
THE SELECTED DROPDOWNLIST DATA IS REQUIRDE TO BE DISPLYED IN A GRIDVIEW.
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Jan 24, 2016
I have dynamically popute the data in Dropdownlist(Countries) and the On selected index event of Dropdownlist there is noeed to bind /populate the Checkbox list from database depending on the selections made from the Dropdownlist.
For example If I select Gujrata then all the cities of Gujrat should be visible and bounded to the check box list.
2) Once the checkbox list is bounded with data from the database, We need to select  the checkbox from the checkboxlist  and  pass tyhe selected  text of all the  selected checkboxes  fro the checkbox list  as comma seperated  values to database  and then I need to Display in the Grid.
Below is my code for Dynamically populated/Bind DropDown list and get the States:
ASPX:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="MachineCode.aspx.cs" Inherits="SampleApp.MachineCode" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script type="text/javascript">
[Code] .....
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Sep 2, 2012
i have 2 DDL in my page that when users select item from ddldistric1 item in ddlcity1 will change these are my code
 protected void DDLcity1_SelectedIndexChanged(object sender, EventArgs e)
{
BindDistrictC();
}
private void BindDistrictC()
[code]...
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Aug 12, 2012
i have 3 drop down list in my page
1-ddlzone1
2-ddldistrict1
3-ddlstore1
this is  ddlzone1 code
protected void DDLzone1_SelectedIndexChanged(object sender, EventArgs e) {
DDLstore1.Items.Clear();
DDLstore1.Items.Add(new ListItem("select center", ""));
DDLstore1.AppendDataBoundItems = true;
SqlCommand _cmd = new SqlCommand("selectcenter", _cn);
[CODE].....
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Feb 11, 2011
my code is very simple. I have one updatepanel, it has one lable and one dropdownlist. everytime, dropdownlist index changed. Label shows selected value. if you select any options besides the first one, it works. if you go back to the first option, then event will not get fired. spending hrs searching on google, couldn't find anything useful.
here's my code
[Code]....
codebehind part:
[Code]....
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May 7, 2015
I want to bind large amount of data in gridview using jquery but without paging.
I am taking reference from this post
[URL]
But when there is large amount of data, it's not working
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Dec 29, 2010
I have 2 dropdownlist, one is to dropdown department, and another dropdown staffnames. the secong dropdownlist will based on the selection of department as each department has different staffs i have 2 tables department and staff in my database , in my department table i have departmentid as PK and departmentname, in my staff table i have staffname and departmentid as FK. So my ques is how am i going to populate staffname in the dropdownlist according to the selection of department.
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Jul 22, 2010
Below is some code. The save() method was pre-existing. I added the saveRanking() method. When I walk through the code, it hits the method, but then it just bails out of it. No exception (that I can see). Do I need that function(data) part?
Code:
function save() {
$.post(
"/Applications/SaveStatus",
[code]....
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May 7, 2015
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)) {
[Code] ....
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May 7, 2015
In my previous question mentioned below.
My previous question mentioned
[URL]
Now i am having two dropdown one is asp dropdownlist and 2ND is MultiSelect-DropDownList-with-CheckBoxes. 2nd dropdown is populating on selected value of first.On page load it works fine. Now, on change of value in dropdown, selected index change 2nd dropdown (MultiSelect-DropDownList-with-CheckBoxes) fills but i see a list box instead of dropdown.
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Dec 5, 2010
I am trying to develop a simple MVC 2 timesheet application for my small business. I have a sort of mock model for now until I have a database in place, just to make things simpler while I develop the functionality.
[Code]....
But then I need to populate a second dropdownlist (taskDropDownList for the tasks associated with a particular customer) based on the selection the user chooses in the customer dropdownlist. But how do I do this exactly? I have seen examples with jQuery, but I'm not sure how to apply them to this situation. Also, the examples seem to just populate the lists with string values. I need to be able to access the objects with all their properties. Because the next thing I need to do is to be able to populate the TimeSegments list of the selected task with values from input fields (i.e. the hours worked for particular dates). And for that to be saved to the "model" (eventually to the database) in the controller, how do I get it there, unless the objects are all part of the same model bound to the View? I'm on rather thin ice with this since I still find the connection between the View and the Controller hard to handle, compared with e.g. Windows development, where these things are rather easy to do.
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Apr 26, 2010
I am using a detailsview control in my form and I want to use the Ajax calendar extender control with some of the fields.
After I have connected the textboxes to the extender and when I click on them there is no calendar displayed.
If this makes any difference I am containing the detailsview in a regular panel control which I make visible through a button click.
Here is the code for the detailsview:
[Code]....
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Jan 10, 2011
I am using asp:ScriptManager and asp:UpdatePanel to populate a DropDown , and for every field need to display hits in div.In order to Implement the hint I am using JS, it works fine unless I started to populate a dropdown based on another one.
here is some code lines from page and JS
<asp:ScriptManager ID="sm" runat="server" EnablePageMethods="true"></asp:ScriptManager>
<asp:UpdatePanel runat="server" ID="up0">
<ContentTemplate>
<dd><asp:DropDownList runat="server" ID="CCategory" CssClass="lst" ValidationGroup="Property" AutoPostBack="true" onselectedindexchanged="CCategory_SelectedIndexChanged" /><span class="hint">Please choose a city where you want to or having a property.<span
class="hint-pointer"> </span></span></dd>........
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Nov 2, 2010
what i am trying to achieve is a single image control with slideshow extender attached which when of the category option buttons are pressed the SlideService goes get the images for that category from the image folder sub folders and starts to display them i have got the code to work as to, the point that i have to hardcode the images sub folders path in to the webmethod - but i want the image folder name to be passed as a parameter when the webmethod GetSlides is called - the code i have so far is From the aspx page - (the category name will be a string retrieved from the button text when clicked
[Code]....
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Dec 16, 2010
I have a WebDataGrid linked to a SqlDataSource to display data. When a row is selected, I want to populate some textboxes and dropdownlists with the data from that row, for editing purposes. The textboxes work fine; I use the following code to select the second field in the grid (Date) and populate the corresponding textbox (I'm using VB): txtDate.Text = currentRow.Items(2).Value However, when I try to populate the dropdownlists using the same code structure, I get the following error:
'ddlType' has a SelectedValue which is invalid because it does not exist in the list of items.
I think the problem may be that the dropdownlists are populated using type_id, while the grid displays type_name. Would this be causing the problem, and is there a way to get around this?
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Oct 19, 2010
I have an SQL Data Source which selects all rows of a table. I need to populate a dropdownlist with a certain field ('percentage') of all the rows, and when one is clicked to make the 'value' the rows 'id' field. Is there a simple way of doing this?
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Jan 16, 2010
I have 2 dropdown list and i have table with thousand record. When was I poulating both dropdown with that table, page take several min to load.
I want to know, how will i populate both dropdown in background after page load.
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Dec 14, 2010
I have a textbox that returns 1 or sometimes more rows.....what I would like to do is basically use that textbox to populate my dropdownlist..See sample data
ID Colour
A red
A white
B blue
So for example...if the user types in A in the textbox
The dropdownlist should be populated with red and white
and if the user types in B, the dropdownlist should populate with just blue
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Jan 18, 2010
I have a webservice that return this xml data.
<?xml version="1.0" encoding="utf-8"?>
<Currencies>
−
<item>
<currency>AED</currency>
<description lang="en">UAE dirham</description>
<description lang="lt">Jungtinių Arabų Emiratų dirhamas</description>
</item>
−
<item>
<currency>AFN</currency>
<description lang="en">Afghani</description>
<description lang="lt">Afganistano afganis</description>
</item>
How to populate "currency" + "description lang="en"" data in the dropdown control?
Here is my view
<%=Html.DropDownList("currency", (SelectList)ViewData["data"])%>
In the controller I have following code:
[Code]....
With this node selection the dropdown is empty.
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Dec 2, 2010
I am using 3 dropdown list in a gridview and the values for the dropdownlist is dynamic from database.based on first dropdown list selected value the values must fill to second dropdown and based on second dropdownlist selected value then items should load to 3rd dropdown and same for 4th dropdown list. Here if i select age,gender,sex, fist name, last name from the template name Human. The first drop down only populate the fields like Age,gender,Sex and so on., When the second dropdown list populate from the fields corresponding Template name Human, Finance, and so on.
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