<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="Area.ascx.cs" Inherits="Book.UserControls.area" %>
  
  <asp:Label runat="server" ID="lt_area" Text="区域：" class="areacss"></asp:Label>

   <asp:DropDownList runat="server"  CssClass="uddl"  
    ID="ddl_area"   AutoPostBack="True" 

    onselectedindexchanged="ddl_area_SelectedIndexChanged"></asp:DropDownList>

<style>
    .uddl { 
    width:200px;
height: 34px;
padding: 6px 12px;
font-size: 14px;
line-height: 1.42857143;
color: #555;
background-color: #fff;
background-image: none;
border: 1px solid #ccc;
border-radius: 4px;

    }
</style>