WebForm1.aspx中的代码如下：
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebApplication4.WebForm1" %>
<%@ Register TagPrefix="SuperCompany" TagName="Address" Src="WebUserControl1.ascx" %>
<HTML>
<HEAD>
<title>DisplayAddressProperties.aspx</title>
</HEAD>
<body>
<form id="Form1" Runat="Server">
<h2>Billing Address</h2>
<SuperCompany:Address id="ctlBillingAddress" Runat="Server"/>
<h2>Shipping Address</h2>
<SuperCompany:Address id="ctlShippingAddress" Runat="Server"/>
<p>
<asp:Button Text="Submit" OnClick="Button_Click" Runat="Server" ID="Button1" />
<p>
<asp:Label ID="lblOutput" Runat="Server" />
</form>
</P>
</body>
</HTML>
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WebForm1.aspx.cs中的代码如下：
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 WebApplication4
{
/// <summary>
/// WebForm1 的摘要说明。
/// </summary>
public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label lblOutput;
protected System.Web.UI.WebControls.Button Button1;
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void Button_Click(object sender, System.EventArgs e)
{
lblOutput.Text = "<h2>You entered the following values:</h2>";
lblOutput.Text += "<b>Billing Address:</b>";
lblOutput.Text += "<li> Street: " + ctlBillingAddress.Street;
lblOutput.Text += "<li> City: " + ctlBillingAddress.City;
lblOutput.Text += "<li> State: " + ctlBillingAddress.State;
lblOutput.Text += "<li> ZIP: " + ctlBillingAddress.ZIP;
lblOutput.Text += "<p>";
lblOutput.Text += "<b>Shipping Address:</b>";
lblOutput.Text += "<li> Street: " + ctlShippingAddress.Street;
lblOutput.Text += "<li> City: " + ctlShippingAddress.City;
lblOutput.Text += "<li> State: " + ctlShippingAddress.State;
lblOutput.Text += "<li> ZIP: " + ctlShippingAddress.ZIP;
}
}
}
參考答案:protected System.Web.UI.WebControls.Label lblOutput;
protected System.Web.UI.WebControls.Button Button1;
protected WebUserControl1 ctlShippingAddress = null;
protected WebUserControl1 ctlBillingAddress = null;
加上相应的声明，