using System; 
using System.Data; 
using System.Configuration; 
using System.Web; 
using System.Web.Security; 
using System.Web.UI; 
using System.Web.UI.WebControls; 
using System.Web.UI.WebControls.WebParts; 
using System.Web.UI.HtmlControls; 
using System.Web.UI.WebControls.Adapters; 

/**//// <summary> 
/// ControlAdaptersSample 的摘要说明 
/// </summary> 
public class ControlAdaptersSample : WebControlAdapter 
{ 
override void Render() override void Render(HtmlTextWriter writer) 
        { 
                ListControl listControl = this.Control as ListControl; 
                IRepeatInfoUser repeaterInfo = this.Control as IRepeatInfoUser; 

                if (listControl == null || repeaterInfo == null) 
                { 
                        base.Render(writer); 

                        return; 
                } 

                if (listControl.CssClass.Length > 0) 
                { 
                        writer.AddAttribute("class", listControl.CssClass); 
                } 

                writer.RenderBeginTag(HtmlTextWriterTag.Ul); 

                for (int i = 0; i < listControl.Items.Count; i++) 
                { 
                        writer.RenderBeginTag(HtmlTextWriterTag.Li); 
                        repeaterInfo.RenderItem(ListItemType.Item, i, new RepeatInfo(), writer); 
                        writer.RenderEndTag(); 
                } 

                writer.RenderEndTag(); 
        } 
}

<browsers> 
    <browser refID="Default"> 
        <controlAdapters> 
            <adapter controlType="System.Web.UI.WebControls.CheckBoxList" 
                 adapterType="ControlAdaptersSample" /> 
            <adapter controlType="System.Web.UI.WebControls.RadioButtonList" 
                 adapterType="ControlAdaptersSample" /> 
        </controlAdapters> 
    </browser> 
</browsers>

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\CONFIG\Browsers

<%@ Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="ControlAdaptersSample.aspx.cs" 
        Inherits="Control_ControlAdaptersSample" Title="友好CSS控件适配器的简单示例" %> 

<asp:Content ID="Content1" ContentPlaceHolderID="cph" runat="Server"> 
        <style> 
                .ListControlCSS {}{ list-style:none; margin:0px; width: 400px; background-color: #CCC; } 
                .ListControlCSS INPUT {}{ background-color: #CCC; } 
                .ListControlCSS li{}{ float:left; width:100px; line-height:30px;} 
        </style> 
        <asp:CheckBoxList ID="cbl" runat="server" CssClass="ListControlCSS"> 
                <asp:ListItem Text="One" /> 
                <asp:ListItem Text="Two" /> 
                <asp:ListItem Text="Three" /> 
                <asp:ListItem Text="Four" /> 
                <asp:ListItem Text="Five" /> 
                <asp:ListItem Text="Six" /> 
                <asp:ListItem Text="Seven" /> 
                <asp:ListItem Text="Eight" /> 
                <asp:ListItem Text="Nine" /> 
                <asp:ListItem Text="Ten" /> 
        </asp:CheckBoxList> 
        <div> 
                 </div> 
        <asp:RadioButtonList ID="rbl" runat="server" CssClass="ListControlCSS"> 
                <asp:ListItem Text="One" /> 
                <asp:ListItem Text="Two" /> 
                <asp:ListItem Text="Three" /> 
                <asp:ListItem Text="Four" /> 
                <asp:ListItem Text="Five" /> 
                <asp:ListItem Text="Six" /> 
                <asp:ListItem Text="Seven" /> 
                <asp:ListItem Text="Eight" /> 
                <asp:ListItem Text="Nine" /> 
                <asp:ListItem Text="Ten" /> 
        </asp:RadioButtonList> 
        <p> 
                官网：<a href="http://www.asp.net/cssadapters/" target="_blank">http://www.asp.net/cssadapters/</a> 
        </p> 
</asp:Content>