1、在HTML中直接调用后台CS代码中的protected成员变量
自定义控件类的HTML代码：
<%@ Control Language='c#' AutoEventWireup='false' Codebehind='MyWebUserControl.ascx.cs' Inherits='WebTestRollback.MyWebUserControl' TargetSchema='http://schemas.microsoft.com/intellisense/ie5'%>
<table width =100%>
<tr bgcolor=#0099ff>
<%
IDictionaryEnumerator objEnumerator = m_htMenu.GetEnumerator();
while (objEnumerator.MoveNext())
{
%>
<td width=10%><a href='<%=(string)objEnumerator.Value%>'><%=(string)objEnumerator.Key%></a>
</td>
<%
}
%>
<td></td>
</tr>
</table>
自定义控件类CS代码：
namespace WebTestRollback
{
using System;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Collections;
/// <summary>
/// </summary>
public class MyWebUserControl : System.Web.UI.UserControl
{
protected Hashtable m_htMenu = new Hashtable();
private void Page_Load(object sender, System.EventArgs e)
{
}
public void AddMenu(string strName,string strLink)
{
m_htMenu.Add(strName,strLink);
}
}
}
2、在自定义控件类中重写Render方法（），此方法不需要控件的HTML代码，只需在Render方法中变相的添加HTML代码，控件的CS代码如下：
namespace WebTestRollback
{
using System;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Collections;
/// <summary>
/// </summary>
public class SubWebUserControl : System.Web.UI.UserControl
{
protected Hashtable m_htMenu = new Hashtable();
private void Page_Load(object sender, System.EventArgs e)
{
}
public void AddMenu(string strName,string strLink)
{
m_htMenu.Add(strName,strLink);
}
protected override void Render(System.Web.UI.HtmlTextWriter writer)
{
base.Render (writer);
writer.Write( @'<table>
<tr>');
IDictionaryEnumerator objEnumerator = m_htMenu.GetEnumerator();
while (objEnumerator.MoveNext())
{
writer.Write( '<td><a href=\''
+ (string)objEnumerator.Value + '\'>'
+ (string)objEnumerator.Key
+ '</a></td>');
}
writer.Write(@' <tr> <table>');
}
}
}
两种方法对于自定义控件用户是透明的，使用方法上没有任何区别：
自定义控件用户HTML代码：
<%@ Page language='c#' Codebehind='TestLogin.aspx.cs' AutoEventWireup='false' Inherits='WebTestRollback.TestLogin' %>
<%@ Register TagPrefix='TT' TagName='CC' Src='MyWebUserControl.ascx'%>
<%@ Register TagPrefix='T2' TagName='C2' Src='SubWebUserControl.ascx'%>
<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.0 Transitional//EN' >
<HTML>
<HEAD>
<title>TestLogin</title>
<meta content='Microsoft Visual Studio .NET 7.1' name='GENERATOR'>
<meta content='C#' name='CODE_LANGUAGE'>
<meta content='JavaScript' name='vs_defaultClientScript'>
<meta content='http://schemas.microsoft.com/intellisense/ie5' name='vs_targetSchema'>
</HEAD>
<body bgColor='#33cccc' leftMargin='0' topMargin='0' rightMargin='0' MS_POSITIONING='GridLayout'>
<form id='Form1' method='post' Runat='server'>
<TT:CC id='m_TTCC' runat='server'></TT:CC>
<T2:C2 id='m_T2C2' runat='server'></T2:C2>
</form>
</body>
</HTML>
自定义控件用户CS代码：
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace WebTestRollback
{
/// <summary>
/// </summary>
public class TestLogin : System.Web.UI.Page
{
public MyWebUserControl m_TTCC = new MyWebUserControl();
public SubWebUserControl m_T2C2 = new SubWebUserControl();
private void Page_Load(object sender, System.EventArgs e)
{
m_TTCC.AddMenu('File','news.sohu.com');
m_TTCC.AddMenu('Edit','hotmail.com');
m_T2C2.AddMenu('Project','project.com');
m_T2C2.AddMenu('Built','built.com');
}
}
}
