AJAX :: Adding Items To The ComboBox Through Javascript

Mar 23, 2010 02:01 PM

I have a Combobox


the combobox doesn't have a get_items() method.

How can I populate the ajaxcontroltoolkit through javascript?


AJAX :: Remove Items From ComboBox Through Javascript

Aug 10, 2010 05:12 AM

I need to manipulate the combobox (from AJAX3.0) in ASP.NET through javascript. The webpage is simple. There is one dropdownlist and one combobox. When the selection of the dropdownlist changes, I need to change the combobox accordingly, may remove a few items or add new items. Right now, I know how to add items into combobox using javascript from the topic:[URL] And I need to how to remove one of the item from the combobox according to a text or just clear all items.

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AJAX Combobox Adding New Items Without Autopostback="true"

Jan 25 at 22:46

Buenos nachos, to be brief, my question is: is it possible to allow users to add new items to a combobox at runtime without having the autopostback property set to true? I understand it needs to postback if a new item is added, but I do not want the box to postback if the user simply selects a different value!

The tag I currently have is below. Without having the autopostback="true", the comboxbox doesn't allow the user to add new items to the box >_<' Any thoughts?

<ajx:ComboBox ID="cbCompany" runat="server" Width="226px" DropDownStyle="DropDown"
OnItemInserted="addCompany" AutoCompleteMode="SuggestAppend">

I know I could add a few more controls and do an easy workaround, just wondering if it is possible to do it this way.

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Web Forms :: Disable Items For A Combobox With Javascript?

Apr 09, 2010 02:54 PM

I've a problem with a master page and combobox items.

I would like to disable certains items on my combo box depends the contex.

I use the disable attributes but doesn't work correctly.

I would like to make with javascript.

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How To Validate Inserted Items In AJAX Combobox Against Database

Nov 30 10 at 14:59

I wonder how to validate if a inserted item in a Combobox exists in a database during postback? If the item.text exists, a errormessage should notify the user that the item already exists in the database. If the item does not exists in the database a inserting should be done.

Should i use the customvalidator and create a servervalidationfunction that searches my databasetable for the item name?

Should i validate inside one of the two ComboBox control events, ItemInserting and ItemInserted?

After validating the existence i would like to validate if the inserting to the database was successfull.

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AJAX :: Adding Combobox Dynamically But Its UniqueId Is Not Working On Postbacks

Nov 19, 2010 05:12 AM

I have added some combobox and texboxes in gridview dynamically to provide the data entry like operations.i have fetched and reset the value of these dynamically added controls on button click as ->



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Hitting Backspace In AJAX ComboBox Causes JavaScript Error?

Sep 16 10 at 17:57

I am using a ComboBox from the ASP.NET AJAX Toolkit (version for .NET 3.5) with values populated into its DataSource property.If I use my mouse to drop the combobox down and select a value, then highlight the value and click backspace, I get an error: Microsoft JScript runtime error: '_optionListItems[...].text' is null or not an objectMy DropDownStyle is set to "DropDown" so I should be able to have text in the control that does not exactly match one of the items in it. Therefore, I do not understand why I get this error. It seems to work perfectly otherwise.

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AJAX :: Dynamically Populate A ComboBox Through Client-side Javascript?

Jul 29, 2009 11:06 PM

I'm using the ComboBox control from the May 2009 release of the ASP.NET Ajax Control Toolkit.

I'd like to try and populate this ComboBox's list of options dynamically from the client-side Javascript (because I'm retrieving the data from the server based on the user's selection in another drop-down box). how to accomplish this? I tried this:


And it didn't work. The ComboBox just ended up with just one item (the first one) in the list, instead of all of them.

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AJAX :: Control Toolkit ComboBox SelectedValue / Does The Combobox Has As A Disadvantage That The Text Has To Be Unique

Apr 28, 2010 05:05 PM

I have the following items bound to my combobox:

Value: 1, Text: SNS
Value: 2, Text: ING
Value: 3, Text: ING

Choosing value 1 results in a SelectedValue of 1

Choosing value 2 results in a SelectedValue of 2

Choosing value 3 results in a SelectedValue of 2

does the combobox has as a disadvantage that the Text has to be unique?

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AJAX :: ComboBox Input / When leave The Combobox It Adds To The Combox List?

Dec 03, 2010 10:37 AM

I'm try to add a combobox to my form which i have done and populate it with the infomation i need but i want to stop the user from being able to edit the first 5 character in the textbox part of the combo box( 1 is this possible 2 am i going about it in the right way).

I have 3 columns fro a db to enter ips ie 123.456.7.89 at the start if each number i want (SE1)(SE2)(SE3) which i can do at the momment . So I get in the combobox list 3 items with (SE1)123.456.7.89 OR just (SE1) depending of i a result is returned from the DB. However i don't want the user to be able to edit out the (SE?) part of the sting in the textbox. When editing i've tried used the text change event to try and capture the change and make sure the string.length > 5 , but the event does not fire also when i leave the combobox it it adds to the combox list. If I refersh it goes back to how it should be with only the 3 items.

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Adding Items From One Dropdown To Other Jquery / Ajax?

Nov 17, 2009 06:17 PM

How to add item from asp.net listbox to another listbox using add button and jquery. Currently, I am using Ajax. I want to use ajax with jquery or simple jquery to move items from one listbox to other.

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Ajax Combobox Not Firing Event When Combobox Is Empty

Jan 3 at 9:45

in aspx i written as follows

<ajaxToolkit:ComboBox ID="cmbAddressAlias" runat="server" DropDownStyle="Simple" AutoCompleteMode="Suggest" CaseSensitive="false" AutoPostBack="true" RenderMode="Inline" Width="170px" CssClass="cmbProvince" OnSelectedIndexChanged="cmbAddressAlias_SelectedIndexChanged"> </ajaxToolkit:ComboBox>

it binding correctly(datasource dynamically binded) and it raises event too while changing index but it is not raising event when we manually clearing the combobox text..if currently combobox having text "ASP" then i manually select that entire text and using del key i am deleting but it is not raising event for me.. when i change index it automatically raising event...i need to raise event while combobox is empty...

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AJAX :: Adding Dropdown List Items In Update Panel?

Nov 28, 2009 01:40 PM

I have tree view's inside an update panels. I would like to add selected nodes from treeview to dropdown list which is in another update panel.

my code behind:

protected void Page_Load(object sender, EventArgs e)
Panel1.Visible = false;
if (ScriptManager1.IsInAsyncPostBack)
Button1_Click1(null, null);


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Web Forms :: Add Items To Combobox From Popup Window?

Dec 27, 2010 01:20 PM

I've a webform that has a formview in insertmode that among others has a combobox with a datasource. The problem is that user needs to have a way to add new items to combobox directly rather than having to go to mainteinance webform that deals with the info related with the table that feeds combobox. So I thought that I should have an update panel and put the combobox in there together with a button to open a popup window to add the new record, close when done and update combobox with newly added item.

In theory that's what I want. What I require are examples of how to do that in the best way. I thought first of using javascript but how do I know when the popup window was closed? how to trigger update panel?

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AjaxToolkit ComboBox Not Displaying List Items?

Mar 6 at 6:37

I am using AjaxToolkit ComboBox in my application

<ajaxtoolkit:ComboBox ID="ComboBox1" runat="server" AutoCompleteMode="Suggest"
AutoPostBack="True" DropDownStyle="DropDownList">

On running the application, i see the ComboBox but none of the list items are visible. Clicking on the dropdown button does not show anything also. Accessing the SelectedItem property shows that the first item is selected.

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Add Items From A ComboBox Or DropDownList; Similar To Shopping Cart?

Sep 19, 2009 03:58 PM

I have two controls on my page; a ComboBox and a ListBox. I am confortable working with either, and I'm fine with setting up the SQLDataSource. I am wondering, though, how to click an item in the ComboBox, or an item in the ListBox, and get these items, which will be multiple items, into another page, and saving the items to that page, kind of like adding items to a shopping cart. This is not for commercial purposes though, and there is no 'shopping cart', but rather, I am trying to select items from lists to plan events. Is there a turotial online, either in written format or a video, that demonstrates how to do this?

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AJAX :: How To Add Items To Dropdownlist By Calling A Webservice From Javascript Without Using Cascading

Feb 26, 2010 04:56 AM

I want to add items to a dropdownlist with values return by a webservice which will be called from javascript without cascading extender...

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AJAX :: To Get The Selected Index,selected Value , Selected Text Using Javascript Of Combobox Control

Feb 17, 2010 04:31 AM

Can i get the selected index,selected value , selected text using javascript of ajax combobox control. if yes send me the sample code.

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AJAX :: Adding The 'multiple' Attribute To The Final Dropdown List And It Allows The Selection Of Multiple Items?

Mar 16, 2011 05:31 PM

I am using the cascading dropdownlist controls from the Ajax toolkit. I have everything working perfectly and all of my select changes work. I have 3 related select boxes that all work great for single item select. What I need is for my last dropdownlist to allow for the selection of multiple items. I have tried adding the 'multiple' attribute to the final dropdown list and it allows the selection of multiple items but I cannot get the items when I post back, just a single item.

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MVC :: Html Helpers With Javascript... Include Javascript In Helper But Avoid Adding Javascript Twice?

Jun 22, 2009 01:13 PM

So I love MVC and I love Html Extensions and now I want to push it a little further... If I wanted to create something like an Html Helper that creates a javascripty style Calendar (for the sake of example as I don't want a calendar :-) how could I wrapper the javascript into the helper so that the consumer of the helper does not have to include the javascript on the page. MOST IMPORTANTLY though I want to have many instances of my calendar on the same page, if I put the Javascript in the Html Helper it will get written out 3 times to the page which is no good, so I am wondering how to get around this.

Essentially I want to know whether I can access the page's DOM whilst the Html Helper is being run so that:1) I can add javascript script/src tags (did I mention I don't want to have inline javascript :-)2) I can query the DOM to check whether the required script has already been included by a previous call the same Html Helper.This may be a no-brainer for some mvc/asp guru out there, it may also be the case that you can't access the DOM at runtime via c#

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How To Toggle Visibility Of Combobox With Javascript Or Jquery

Feb 28 at 15:58

I have a set of server side combo boxes in a table. Based on client events, I need them to appear or disappear. I've tried the following with no success:

document.getElementById("cboToothNumber").style.visibility = "hidden";


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Javascript - ExtJS Combobox Sometimes Hides Behind Window Greyed Out?

Sep 27 10 at 13:58

So the code below is called when a user selects Save on an ExtJS popup modal window. This window ONLY contains a combobox. Now, sometimes when a user saves this, and then re-opens it later on, the combobox will appear BEHIND the window all grayed out, unable to get to. Other times, it will be fine and work, and no difference in events happening either time, just complete utter inconsistency.Does anyone know what this could be?

var changeProductOK = function() {
var win = getChangeProductWindow();
if (win.subProductId.getValue() == '') {


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AJAX :: How To Display Tooltip For The Items Of The Auto Complete Extender's Drop Down List Items

Mar 04, 2009 02:16 PM

I want to display tooltip for the items of the Auto Complete Extender's drop down list items. How to do it?

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AJAX :: Highlighting The Text Of The Selected Item In Ajax Combobox?

Sep 26, 2010 04:12 PM

Is there a way to programmatically select the entire string of the selected item in the AJAX Combobox?What I'm trying to do is bascially on a State/City selection.

1. User selects a State from the first combobox. This triggers the City combobox to be populated. The item(0) is "Select One:".

2. I want the entire "Select One:" to be hightlight as if the user had used their mouse and highlighted all the text.

The reason for this that I'd like the user to be able to start typing the city without needing to clear out the "Select One:" manually.

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C# - Adding Only New Items From One List To Another?

Aug 11 10 at 18:45

I have two lists:

List<string> _list1;
List<string> _list2;

I need add all _list2 different items on _list1...

How can I do that using LINQ?

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Adding Groups To Dropdownlist Items?

Nov 01, 2008 09:26 AM

I hav a dropdown list which gets populated based on a search query.

I need to group the dropdownlist items based on certain segments.

I want my output like this: [URL].the code on tis page is not helping me a bit, since i am very much a beginner..

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Adding Items To A Drop Down List?

Jul 26, 2009 08:43 PM

i have a drop down list in which i want that the first item should be blank and rest will be added by connecting to a database.. i hv added the database item ..they are wrkin.... BUT the question is that how do i add the blank item also..

i used this code to add the items from database into the ddl :


ddl is the id of my drop down list.

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Adding Items To List Box From Popup?

Nov 08, 2010 10:51 AM

in one page i have list box on one button click i am showing on popup which is another aspx pagein that page showing one grid with check box now i want that when user select check boxes and click on add button selected items should gets added to list box on page when i click save button on page(not popup) all the records in that list box should gets saved to data base how to do this

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Nov 5 10 at 22:09

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Sep 08, 2008 01:42 PM

I need to dynamically add a string sNewRow to a listbox. This is easy, I just use:

ListBox1.Items.Add(New ListItem(sNewRow)) in my VB.NET code.

However, sometimes when the code runs I would need the item to be added in a different colour, depending on some other condition. Does anybody know if there is a way of adding the new listitem to the listbox but at the same time declaring its colour to be (for example) green?

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Feb 22 10 at 19:15

if i create a html ul. and wanted to dynamically add list items to this list.

so i have :

<ul id="test" runat="server">

is there a way i can add list item to this list dynamically in asp.net i am using vb

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Aug 23 10 at 21:08

I'm trying to add a text-only item to a databound menu control. So far all I'm capable of doing is adding more links, but no text. My goal is to have a leading item be part of the menu but not a link. I want it to be displayed as text...

I've tried adding items to the menu.items collection, but this adds links.

I've tried adding items to the menu.controls collection, but this doesn't get picked up at all, just ignored.

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Dropdownlist With Items From Database And By Adding Manually Too?

Dec 25, 2009 05:27 AM

I have a dropdownlist & binding it from databse.

but i also want to add an item manually as All , at the last of dropdownlist items.


how i will add this one item(All) that is not coming from Database.

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Jan 17 at 9:38

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Jan 30, 2011 10:06 PM

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So far all the coding in done in a class file, we are using stored procedures and have used user controls to return the information from the database and then also to select the row of information for each news item from the database. The sql database connection information and executing the stored procedure information is all done in the class file. how to add the news items to the SQL table. Below is the code that is used to return each news item from the SQL Table, how i need to amend this to rather than display the information, save it to the database. Also having used stored procedures, would I need to create another stored procedure to to the INSERT INTO statement

[code] ....

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Web Forms :: Cant Add Another Item In Dropdown After Adding Items From Datasource?

Jan 02, 2010 02:09 PM

After I execute a data reader and put the readed string from the database in my dropdownlistbox, I cannot add another item in it.Here's my code:

Dim com As New OleDbCommand("Select Status from Table where Id = 'somevalue' ", con)
Dim dr As OleDbDataReader


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AJAX :: CSS With ControlToolkit:ComboBox

Dec 29, 2010 04:58 PM

I was trying to use CssClass="WindowsStyle" with the following CSS. Its working fine if WindowsXP theme is selected but when the theme is changed it looks odd (different from other controls).

I wish to have the ComboBox similar to the style used by other controls. Please give me the solution for this issue.

I understand the issue is with the button(background-image: url(../images/windows-arrow.gif);) but what could be the alternate solution?CSS used


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Want To Create A Dll For Ajax ComboBox

Jan 17, 2010 05:30 AM

I am using ASP.NET 2.0

I want to create a dll Only for Ajax ComboBox. I mean I want when I add this dll in toolbax, I able to drag Ajax Combo Box control on web form.Ajax provided source code & JavaScript files for ComboBox but how I can Create a dll from this.

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AJAX :: How To Clear A Combobox

May 11, 2010 04:25 PM

I have been trying to figure out how to Clear out the contents of a combobox; both the dropdown list and the textbox. Currently I have


this is clearing out the listbox, but if something was in the Textbox it remains. If I add


then I get "Combobox has a SelectedValue which is invalid because it does not exist in the list of items."

I've tried several other combinations, none of which worked. how to clear out textbox portion of the combobox?

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Web Forms :: Adding Outlook 2007 Items Via File Upload

Oct 22, 2009 01:34 PM

I am looking for a way to be able to attach an Outlook item (an email message) in an ASP.NET 3.5 application. Similar to when in Outlook and sending an attachment, you can select either a file, or an item. Selecting an Item, opens up your Outlook folder directory, and you can select an email message, and send it as an attachment. I have a need for being able to access these emails in the Outlook folder directory and add them as a file attachment. I am not using the File Upload Control, I am using an HTML input tag with type="file".

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