Drop Down List item event

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i have a Drop Down List called "drop_category" like:

-Category1
-Category2
-Category3
-Category4
-Add new category

and i want the web will open a popup when user select item "Add new category"

i tried

drop_category.Items.FindByText("Add new category").Attributes.Add("onfocus", "newCate()");

--
 function newCate() {
        window.open('Category_Manage.aspx', null, 'height=250, width=250,status= no, resizable= no, scrollbars=no, toolbar=no,location=no,menubar=no ');
        return false;

but it not work. How i can do it?

I would really appreciate your help

Posted 1-Mar-12 18:16pm

summerrain_90

Updated 1-Mar-12 18:45pm

Varun Sareen

v2

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Subinal · Accepted Answer · 2012-03-01T22:48:00

Use the onChange event of thr drop_category and use the selectedIndex to find if its the selected item.

C#

drop_category.Attributes.Add("onChange", "newCate();");

in the code behind and in the js

JavaScript

function newCate() {
var e = document.getElementById('ctl00_<panelname>_drop_category');
    if (e.options[e.selectedIndex].value == '0')
        window.open('Category_Manage.aspx', null, 'height=250, width=250,status= no, resizable= no, scrollbars=no, toolbar=no,location=no,menubar=no ');
    return false;
}

Replace the value with whatever value you have. Do Note that your control name in javascript may be different. If you have your javascript as inline you can use the ClientId to retrieve the drop down's name when it is rendered in html. Like this:

JavaScript

document.getElementById('<%= this.drop_category.ClientID %>');