Updating webserver controls after clientside update

Question

0.00/5 (No votes)

See more:

Hi,
I have 2 asp:listboxes and 2 buttons in my page. one button is a normal HTML button and the other is an asp:button.

I've a list of values in the first listbox. on my html button click, the values are being copied/moved to the second list box using a function written in jQuery. But when i click on my asp:button which check the values inside second listbox, it shows the count of items in the listbox as 0.

Is there any way i can get the values of second listbox on the asp:button click?

Thanks,
Daion

Posted 3-Jul-12 3:28am

DieOnTime

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

priyanka Dhoble · Answer 1 · 2012-07-03T04:35:00

Dropdown, list box, labels etc. are serialized and state is stored in viewstate. So when you do the postback the controls are recreated and the values are loaded from viewstate. Hence you cannot see the items added through JavaScript in second listbox.

The only way to get it working is have a hidden field on the page. Add the selected items from listbox1 as comma separated list in the hidden field in the same function where you are adding it to second listbox and then access the values from this hidden field at server side on postback.