Below is the effect of imitating DropDownList, supporting pictures, multi-columns, wraps, etc. View example
WebdropDownList.aspx
<% @ Page language = "c #" Codebehind = "WebDropDownList.aspx.cs" validateRequest = "false" AutoEventWireup = "false" Inherits = "eMeng.WebDropDownList"%>
analog dropdown list title>