List Controls: List Box and Drop Downlist

ASP.Net provides the controls: drop-down list, list box, radio button list, check box list and bulleted list. These control let a user choose from one or more items from the list.
List boxes and drop-down list contain one or more list items. These lists could be loaded either by code or by the ListItem Collection Editor.
Basic syntax for list box control:

<asp:ListBox ID="ListBox1"       runat="server"       AutoPostBack="True"       OnSelectedIndexChanged="ListBox1_SelectedIndexChanged"> </asp:ListBox>

Basic syntax for a drop-down list control:

<asp:DropDownList ID="DropDownList1"      runat="server"      AutoPostBack="True"      OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged"> </asp:DropDownList>