Onselectedindex changed.of Dropdownlist

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Hi,

I have abc.aspx page.
And in the same page i have put iframe for showing result on submit button click.. in abc.aspx page there are two dropdownlist DDL1 and DDL2..

In DDL1 dropdownlist i have populated countries from database and with respect to selected country i have to populated its state in DDL2....
but when i use selectedindexedchanged event for DDL1..then it autopostback and iframe is repeated twice ..in the same abc.aspx.

so i have to avoid it ...my target is populate country in DDL1 and onchange of that country populate state in DDL2..and onclick of submit button i have to show result(data) in iframe page with respect to selected country and state...

Thanks in Advanced

Posted 11-Mar-12 1:56am

Nikhil Dayalpawar

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kishore sharma 11-Mar-12 8:06am

The best way to avoid the page refresh is use update panel...
are you creating iframe dynamically(from code behind)

[no name] 11-Mar-12 10:27am

no its created in aspx page

3 solutions

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Aniket Yadav · Answer 1 · 2012-03-11T02:20:00

Solution 1

See this tutorial

http://www.tamilcodes.com/document.aspx?content=Tutorials&id=36[^]

Posted 11-Mar-12 2:20am

Aniket Yadav

Comments

[no name] 11-Mar-12 10:29am

i have to take data from database and bind it in DDL1..with respect to selected in DDL1 ..data may be bind in DDL2...i have check link it is static data taken i array in javascript ..it is possible to take datatable in javascript..

Aniket Yadav · Answer 2 · 2012-03-11T18:57:00

Solution 2

check out this link

http://www.dotnetexpertsforum.com/how-to-change-the-data-in-dropdownlist-based-up-on-selection-t1903.html[^]

Posted 11-Mar-12 18:57pm

Aniket Yadav

khan mohd faizan · Answer 3 · 2012-03-11T19:03:00

Solution 3

place your dropdownlist in update panel this is best way to avoid refresh the page

Posted 11-Mar-12 19:03pm

khan mohd faizan