ASP.Net DropDownList SelectedIndexChanged and Selected Value Problem

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In my web application there are some DropDownList. I use selectedindexchanged event for every dropdownlist. but only a single dropdownlist creates problem. it's selected index changed event not fired and also when i try to select an item, it select it's default value.

AutoPostBack and ViewState enabled

don't understand what to do.

Posted 22-Jun-13 18:53pm

Dipankar Basu

Updated 22-Jun-13 18:54pm

v2

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KK Kod 23-Jun-13 1:00am

please post the code behind and the event

Dipankar Basu 23-Jun-13 1:08am

protected void ddlProSupplier_SelectedIndexChanged(object sender, EventArgs e)
{
if (Convert.ToInt32(ddlProSupplier.SelectedValue) != 0)
{
hdfSupplierCode.Value = SupplierManager.retrieve("[dbo].[Proc_Retrieve_AllSupplier]", Convert.ToInt32(ddlProSupplier.SelectedValue)).Code.ToString();

create_barcode();
}

}

KK Kod 23-Jun-13 1:16am

please post the ddl from your page source too

Dipankar Basu 23-Jun-13 1:18am

<asp:DropDownList ID="ddlProSupplier" runat="server" AutoPostBack="true" CssClass="dropdownlist" OnSelectedIndexChanged="ddlProSupplier_SelectedIndexChanged">

Mahesh Bailwal 23-Jun-13 1:56am

Can you share where you are binding data with ddl. In PageLoad, if yes, is it inside if(!IsPostBack) condition?

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Mahesh Bailwal · Answer 1 · 2013-06-22T20:04:00

Solution 1

Please make sure your not binding your ddl data in every post back inside Page_Load. Put your binding logic inside if(!IsPostBack)

if(!IsPostBack)
{
//bind your ddl here
}

Posted 22-Jun-13 20:04pm

Mahesh Bailwal

kdampuru · Answer 2 · 2014-04-02T13:25:00

Solution 2

I too got same problem,you solved it.thanks Bro.

Posted 2-Apr-14 13:25pm

kdampuru