Call javascript on dropdown selected index change

Question

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i have a dropdown like tihs

<asp:DropDownList ID="cmbexch" runat="server">

And trying to call javascript like this.
On page load i am writting this line
cmbexch.Attributes.Add("OnSelectedIndexChanged", "javascript:fillmkttype()")

but it is not working

Posted 29-Aug-11 0:18am

mayur csharp G

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5 solutions

Solution 3

SQL

cmbexch.Attributes.Add("onChange", "return OnSelectedIndexChange();")

<code> OnSelectedIndexChange()</code> should be your  Javascript function that will be call <code>DropDownList </code> Seleted index is changes.

Something Like

function OnSelectedIndexChange()
{
alert('index changed')
}

You can also pass the object to get the value of selected item as well.

Posted 29-Aug-11 0:56am

Abhijit Jana

Comments

mayur csharp G 29-Aug-11 7:01am

Hi all
i solved like this
i wrote simply
cmbexch.Attributes.Add("onchange", "javascript:fillmkttype();")

on page load

Solution 1

Hello Dear,

You can call the java script function in the design page itself by adding

onselectedIndexChanged="function();"

Hope it will help you to call the javascript function on selected index changed event.

Posted 29-Aug-11 0:29am

baisak

Solution 2

u can call in this way also
in dropdown selected index changed event

page.ClientScript.RegisterStartupScript(this.GetType(),"a","<script language='javascript'>fillmkttype();</script>");

Posted 29-Aug-11 0:47am

hitech_s

Updated 29-Aug-11 0:58am

v2

Comments

Abhijit Jana 29-Aug-11 6:59am

How this will work on Selection Index change ?

hitech_s 29-Aug-11 7:02am

write this line in selectedindexchanged event
it will fire the javascript function

Solution 5

<pre lang="c#"><pre lang="CSS"><a href=""></a>[<a href="" target="_blank"></a>]<a href=""></a>&<big><small></small></big></pre></pre>

Posted 3-Jan-12 9:49am

Member 8272087

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satyanarayana p.j · Accepted Answer · 2011-08-29T01:05:00

Use attribute onchange inside asp:dropdown

XML

<asp:DropDownList ID="ddShed" Width="120px" onchange="GetBalanceQty(this.options[this.selectedIndex].value);"
                                    runat="server">
                                </asp:DropDownList>

JavaScript Function----

C#

function GetBalanceQty(val)
    {
//in val u get dropdown list selected value
        var id = val;
}

Thanks & Regards,
satya.
please mark as answer if helpful.