Help with multiple dropdownlists and updatepanels
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Hi, I'm developing a user control that is loaded dynamically into a page. The user control has 4 dropdownlists(DDLs). Each is populated dynamically depending upon the values selected in the previous DDLs. Each DDL is in a separate updatepanel (not nested) and has the autopostback set true. Each has its trigger set as the SelectedIndexChanged event of the DDL before it. The problem is, if the user selects a (non default) selection 'x' in the first DDL and tries to select something say 'p' in DDL2, on postback, SelectionChangedEvent for DDL1 is fired (as per normal page lifecycle) to select 'x' which reloads DDL2 before SelectionChangedEvent of DDL2 is fired. This causes the selected 'p' in DDL2 to be lost and the page comes back again with the default selection for DDL2. Similar is the case with other DDLs. Here's the logic of my code: Page_Load() { //Load DDL1 } UpdatePanel2_Load() { //Load DDL2 } UpdatePanel3_Load() { //Load DDL3 } UpdatePanel4_Load() { //Load DDL4 } OnSelectedIndexChanged_DDL1() { //Load DDl2,DDL3,DDL4 } OnSelectedIndexChanged_DDL2() { //Load DDL3,DDL4 } OnSelectedIndexChanged_DDL3() { //Load DDL4 } What this does is, when OnSelectedIndexChanged_DDL1() is fired on postback to select 'x' in DDL1, it reloads DDL2,DDL3,DDL4 and by the time OnSelectedIndexChanged_DDL2() is fired (because of the selection 'p' made by user) the statement 'DDL2.SelectedValue' inside it only returns the default DDL2 selection 'd' and not the user selection 'p'. Can I get the value selected by the user in Page_Load itself (say from Viewstate) instead of waiting for OnSelectedIndexChanged_DDL2() to fire? I know it's really long and might seem confusing but I really need a solution to this and am losing my mind! :) Any help would be great. Thanks