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How to auto populate a second dropdown list from a previous selection on the first dropdown list?

jhsit
jhsit asked
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Medium Priority
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Last Modified: 2012-05-07
Im trying to create a form that will have several dropdown lists. When a user chooses and option on the first dropdown list, it will populate the second dropdown with options related to the selection on the first dropdown list. Im new to .net and I dont know how to go about it.
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Top Expert 2013

Commented:
Key is to use SelectedIndexChanged event on first DropDownList and appropriately binding the next DDL..
See this example:
http://www.aspsnippets.com/post/2009/06/13/Creating-Cascading-DropDownLists-in-ASPNet.aspx
Senior Engineer
Commented:
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Commented:
HI There,

I would try to steer away from using MS ajax in my applications if I were you. The library is massive and adds to much weight and code to your page.

What you need can be achieved using a javascript framework like (www.jquery.com). Here is a sample of dependant dropdowns that can be adapted to what you're doing.

http://www.ajaxray.com/blog/2007/11/08/jquery-controlled-dependent-or-cascading-select-list-2/ 

There are also more samples on the web or if need be I can help you with some basic code.

Sean

Author

Commented:
Awesome Website-- It was more than I was looking for.. thanks!!!
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