Dropdownlist with autopostback="true" showing 1st item

Question

I have two dropdownlists:- ddl1 and ddl2. ddl2 is populated on selectedindexchange event of ddl1 i.e. at runtime. ddl1 and ddl2 both have Autopostback=true. ddl2 also has selectedindexchange event handled. But when I try to select an item in ddl2 it refreshes the page and it shows the 1st item in the ddl2. I have searched it on the internet and tried various things like putting ddl2 in update panel and handling prerender event of pagelifecycle but they didn't help. Please provide some solution. It is required for my project. Please help

Madhukar Krishna · Answer

Thanks for all the response. The mistake was in binding the dropdownlist. The datavaluefield was being wrongly binded. I have corrected the issue. Thanks!

Bikesh Srivastava · Answer

Hi I think you are doing good but you need to change some little bit of code just check cascading dropdown.

Rajeesh Menoth · Answer

Hi Please check the following article : http://www.c-sharpcorner.com/uploadfile/d1558d/working-with-multiple-dropdownlist-using-asp-net/

Manas Mohapatra · Answer

If you don't have any logic with second dropdownlist remove autopostback and selectedindexcahnged property.

Dilip Gupta · Answer

try with remove postback true from second dropdowndown reffer folloeing link http://csharp-video-tutorials.blogspot.in/2012/11/cascading-dropdown-in-aspnet-part-22.html

Midhun T P · Answer

Hi Please post your code inside page load.

Technetshadow · Answer

refer: http://www.aspsnippets.com/Articles/Creating-Cascading-DropDownLists-in-ASP.Net.aspx https://code.msdn.microsoft.com/csaspnetcascadingdropdownli-0a3f1ecf If you are binding dropdowns from codebehind then try removing binding code from aspx if any.