when i refresh the pagedropdown value also refresh

Question

Dear all when i refreshed the page then dropdownlist value also refresh but i don't wont.. plz give me any solution....so i will put this in code. thanks in advance

Manas Mohapatra · Answer

Firstly it looks viewstate enable problem. You must enable the ViewState property as true for the dropdownlist in order to maintain state of control. Just cross verify anywhere viewstate is disabled in application or page level - just enable it. See below code: OnSelectedIndexChanged=DDL_OSIC AutoPostBack=true EnableViewState =true> Secondly make sure you are binding data to dropdownlist one time only. Use IsPostBack property to bind data when page loads first time. protected void Page_Load(object sender EventArgs e) { if (! IsPostBack ) { DDL.Items.Add(red); DDL.Items.Add(green); DDL.Items.Add(blue); } }

when i refresh the page,dropdown value also refresh