runtime drop down boxes

[mark_me]

Hi, Currently, i have one language dropdownlistbox which contains upto 40 languages. I want to add functionality for adding upto 5 languages. I want it similar to languages feature on orkut.com (or maybe facebook), where u choose one language, click a btn and another drop down box with add btn appears, again on click another dropdown and add btn appears (this happens for 10-12 languages). I am confused regarding the implementation in the sense that whether this functionality requires ajax update panel or can it be done using javascript. Is there anyway in which javascript can take data of one ddl and add it to another , so that if i add 5 ddls and then appear and disappear the boxes using javascript and transferring dropdown data from first dropdown box, I can do the appear/disappear part of it but i dont want to assign 40 languages to all 5 controls at same time, i want one to be visible and maybe on a click another appears with the 40 languages from first ddl... Thanks for your opinions and responses

[Abhijit Jana]

Ajax is one option that you can use. But if you want to creates ddl and runtime, then you need to creates them before page load, Preferably Pre_Init(), other wise control will not maintin View State Data also not able to hold postback data.

Abhijit Jana | Codeproject MVP Web Site : abhijitjana.net Don't forget to click "Good Answer" on the post(s) that helped you. View My Latest Article

[4anusha4]

try using cascading dropdown of ajax

[mark_me]

Thanks for your reply, I don't want to create the drop down boxes at run time, i think, i will add them to the page with no data and style="display:'none'". (is that a good practise?). Then i will have a button which would display it at client side but how would i transfer values of first dropdown to second (in client side script) if it is made visible. Best regards

[mark_me]

Thankyou, i will look into cascading drop down boxes of ajax... Thankyou..