How to get the latest selected value from a checkbox list?

Question

I am currently facing a problem. How to get the latest selected value from a asp.net checkbox list?

From looping through the Items of a checkbox list, I can get the

Answer 1

Don't know about you, but as a user i wouldn't want the page to post back every time a checkbox item was checked.

This is the solution i would go with (jQuery):

Declare a server-side hidden field on your form:

Then wire up client-side event handlers for the checkboxes to store checkbox clicked:

$('.someclassforyourcheckboxes').click(function() {
   $('#HiddenField1').val($(this).attr('id'));

This is a lightweight mechanism for storing the ID of the "latest" checkbox clicked. And you won't have to set autopostback=true for the checkboxes and do an unecessary postback.

You dont HAVE to use jQuery - you can use regular Javascript, but, why do more work? =)

Then when you actually do the postback (on a submit button click i assume), just check the value of the hidden field.

Unless of course you WANT to postback on every checkbox click, but i can't envision a scenario in which you'd want this (maybe you're using UpdatePanel).

EDIT

The HTML of a checkbox list looks like this:

 I have a bike

So, you can access three things:

Vehicle = $(this).attr('name');

Bike = $(this).attr('value');

I have a bike = $(this).html();

If you're trying to access the databound value, try the second technique.

Give that a try.