Question

I have dropdownlist and set autopostback Property to true..
the problem is that i when i change index of dropdown list Page gets postback. After Completion of Page load index of dropdown goes to 0 automatically.

How can i remain index of dropdownlist after POstback

Thanks.

Answer 1

You can bind the drop down only in the page load.

if(Page.IsPostBack == false) //page is loading first time
{
    //you can do your coding here.
}

for more infor refer to what is Ispostback == false ?

EDIT:

You have to set DataValueField and DataTextField of the dropdown list, before binding the dropdownlist may be.