fill city in dropdown list based on selected value of state from database

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i have one drop down list...in which first i fill country name dynamically..after selecting country drop down list is fill with state....and after selecting state drop down list is filled with corresponding city of state..all the value of state and city are must be filled from database..

Posted 29-Sep-12 2:07am

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Richard MacCutchan 29-Sep-12 9:02am

So what is your problem?

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Sandeep Mewara · Answer 1 · 2012-09-29T03:04:00

It's called Cascading Dropdown.

Look here:
CascadingDropDown Demonstration[^]
AJAX Cascading Dropdown Example using SQL Database[^]
Populate Cascading DropDownList On Selection ASP.NET[^]

If not update panels, then you need to use traditional AJAX - XMLHttpRequest.
Refer:
AJAX for beginners (Part 2) - Using XMLHttpRequest and jQuery AJAX to implement a cascading dropdown[^]