Controls :: Validate DropDownList CheckBox List Server Control Using JavaScript

May 7, 2015

How to validate DropDownCheckBoxes control at client side(javascript or Jquery)? I would like to restrict the user to submit the page if no item is selected in the dropdowncheckboxes control. i.e no check box is checked.Javascript/Jquery code to validate the control at client side.

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C# - How To Validate Checkbox List In Javascript

Oct 12, 2010

n my aspx page i am having a checkbox list ..It has binded values from a table..
I need to validate the checkbox list ..I tried the following script

var checkBoxCount = 0;
var elements = document.getElementById('<%=ChkBoxList.ClientID%>');
for(i=0; i<elements.length;i++)
{
if(elements[i].checked)
[code]....

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Javascript - Validate DropDownList If Checkbox Checked?

Aug 31, 2010

ASP.NET3.5 Webforms. Am trying to put a validator on the drop down list, only if the checkbox is checked.

This doesn't work. If I put an alert in the onclick event, it does show.

<script language="javascript" type="text/javascript">
function setVal(sender) {
var myVal = document.getElementById('<%=(DropDownList)CreateUserWizard1.CreateUserStep.ContentTemplateContainer.FindControl("ddlSupplierCouncilArea")%>');

[Code]....

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Web Forms :: How To Validate Checkbox List

May 5, 2010

I want to validate checkbox list, i am using this strategy which is mention in this lik given below

http://www.4guysfromrolla.com/webtech/tips/t040302-1.shtml

but i am using c#, and here they use script language ="vb" . so anyone tell me , How can I validate checkbox list using c#

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Forms Data Controls :: Javascript Controlled Checkbox List Within Listview?

Jun 22, 2010

[Code]....

when i use it on a empty webform it works nicely, however when i use it in a ListViews InsertItemTemplate it does not.get an error aying document.GetElementById is null and stops elowdocument.getElementById("CheckBoxListStr_0").checked = false

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C# - Validate Dropdownlist Selectedvalue Against A List From Static Property?

Oct 4, 2010

I am using javascript to validate user input on my aspx page. I am easily able to validate textboxes and dropdown list for differenet scenarios.

Now, on one of my dropdown lists (for country), I need to check if it is an allowed country or not for a particular service. I have stored the valid country list in a static property. Is there a way to validate my dropdownlist selected value against that static property?

function validateService(source, args)
{
var country = document.getElementById('<%= ddDestCountry.ClientID %>');
var service = document.getElementById('<%= ddService.ClientID %>');
// Get allowed country list from my static class
var countryList = document.getElementById('<%= StaticProperties.EUCountryList %>');
if (service.value == "P")
{
// I want to do something like this
if (!countrylist.Contains(country.value))
{
args.IsValid = false;
}
else {
args.IsValid = true;
}
}
return;
}

Update(Additional Information): The static property is read-only so it cannot be tampered with from the page.

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Dec 17, 2010

I have created a gridview with dropdownlist in asp.net using c#.i want to validate dropdownlist using jvascript.if i dont select anything from dropdownlist that time script shud display a message.i don know how to get the name or id of that dropdownlist

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Web Forms :: Validate Dropdown List Using Javascript?

Jan 20, 2011

How to validate dropdown list using javascript?

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Sep 9, 2010

i want to apply color to selected number of items in checkbox list and seleted number of items in drop downlist for e.g color red for few items and black (default). I have a bit value set in data base so if bit is set to 0 then red and if 1 then back.

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Sep 20, 2010

i want to validate dropdownlist(asp.net controll) at client side without any post back

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Oct 5, 2010

I have question about dropdownlist control.I have a dromdownlist control which shows the list of dealers.I want to add a sub-list to each dealer which should populate the products available at that particular dealership.I don't want to select value from sub-list display.

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JQuery :: How To Compare To Checkbox List And Show Selected In First Checkbox List

Nov 25, 2010

how to compare to checkbox list and show selected in first checkbox list

[Code]....

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Forms Data Controls :: Bind Checkbox List To Selected Items List?

May 27, 2010

I have a situation where I want to show the selected records out of total records for a product of an employee

1) There is a checkbox list bind to <List> of objects from object datasource (For total items in list)

2) Now I want to check the selected items for a particular record in this list

3) For this purpose I have another list of <List> selected items returned by data access layer (For selected items for that employee )

4) How do I bind the selected objects with the total items list ?

5) In spaghetti coding model it was all too easy just by binding the checkbox list with a sql data source and running a for each on form load

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Forms Data Controls :: How To Validate Checkbox In DataList

Apr 17, 2010

I have <asp:Button ID="btnDelete" ..../> and <asp:DataList ID="lstOrder"..../>

"lstOrder" has <asp:CheckBox ..../> for each "lstOrder" item. I am binding "lstOrder" to DataTable at run time (DataTable is being created dynamically"

"btnDelete" first loops through the "lstOrder" and stores the indexes of items which are marked(checked). Next rows are deleted from the DataTable and "lstOrder" is binded again.

I don't want to postback if none of the items are marked in the "lstOrder"

How to validate ?

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Forms Data Controls :: Object Reference Not Set To An Instance Of An Object In Nested Repeater Control Of CheckBox List ...

Sep 24, 2010

[Code]....

I am getting error of in Foreach loop

[Code]....

How to resolve this situation or any other alternative to cum out of this problem.

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Web Forms :: Disable Multiple Selection In CheckBox List Control

May 5, 2012

I have a checklistbox like this :

<asp:CheckBoxList ID="chklstSector1" runat="server" AutoPostBack="True" ></asp:CheckBoxList>

it allow multiple selection..i want it should select only one from list and does't allow multiple selection..

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May 7, 2015

i am develope one webpage in that user can select multipule checkboxs inside the listbox? any examples?

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Web Forms :: Control Checkbox Selection From CheckBoxList Using Javascript?

Apr 19, 2010

I am binding a checkboxlist with a dataset (with these columns :
id,empname,resourceId,balanceId as columns) with datavaluefield as id and datatextfield as empname;

Now, i want to control the selection of the items. Say some thing like

1. "User should be allowed to check only say 5 items with same resourceId" using javascript

2. And in total he should select only 20 items (max 5 items for same resource id and max 15 items for the remaining)

How can we control this?

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Disable A Checkbox In Javascript And Recognize It As Checked On The Server Side?

Mar 17, 2010

I have a checkbox which in some cases may be disabled and checked using javascript, i.e:

var cbTest = document.getElementById("CheckBoxTest");
cbTest.disabled = true;
cbTest.checked = true;

However, when sending a postback, CheckBoxTest.Checked is false on the server side.

Is it possible to disable the checkbox and still have the server side recognize it as checked?

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How Check At Lease One Checkbox Is Checked Inside .NET Repeater Control In Javascript

Sep 20, 2010

In my asp.net website; i have REPEATER control having child control checklistbox , dynamically generates in code behind.I would like to know how can i write javascript function where i have to check at least one checkbox should be checked.

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JavaScript - How To Show Msg Box If User Forgot To Check Checkbox Control On Button Click

Jan 27, 2011

i have 20 checkboxes in usercontrol ... i wanna do whole coding in user control ...

how to show msg box if user forgot to check asp.net checkbox control on button click .. ?

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Javascript - Hidden Validator Controls Still Validate?

Dec 28, 2010

I've set up a page that uses JavaScript to hide or show rows in an HTML table, depending on the state of a checkbox.

So far, so good. But this is a data entry form and some rows include validation controls. However, it appears that if I hide a row (using JavaScript: style.display = 'none') that contains a validation control, the control still validates on an attempt to postback.

way I can do this but have the validation controls not do anything if that row is hidden?

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Feb 5, 2010

if the checkbox is true then it move to another page or else it back to same page and produce a error msq..it all done by click a command button

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Mar 3, 2011

I am with MVC 3 validation code for a checkbox field that I can't seem to get to work. I'm looking for feedback to what might be wrong or if I am going about this a totally wrong way. I have searched for this error and as a beginner I think I am more turned around than when I started.

[code].....

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Can Validate That A Checkbox Has Been Checked

Feb 13, 2010

Using Asp.net Webforms how can I validate that a checkbox has been checked. (I cannot do a postback) has to be in javascript (either custom - working with the existing validation controls for other fields. or using a .net validation control)

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