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"); } } }

|