ASP.NET用户控件事件的定义和实践
<table>
<tr>
?? <td><asp:LinkButton ID="lbnHome" runat="Server" CommandName="HOME" Text="首页" OnClick="lbnHome_OnClick"></asp:LinkButton></td>
? </tr>
</table>
使用? ascx? 控件
sample:buutonListTest .aspx
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
??? <title>无标题页</title>
</head>
<body>
??? <form id="form1" runat="server">
??? <div>
??????? <uc1:buttonList ID="ButtonList1" runat="server" >???
??? </div>
??? </form>
</body>
</html>
sample:buutonListTest .aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
namespace stoneControls
{
??? public partial class buutonListTest : System.Web.UI.Page
??? {
??????? protected void Page_Load(object sender, EventArgs e)
??????? {
??????????? this.ButtonList1.Click+=new ClickEventHandler(ButtonList1_Click);
??????? }
??????? protected void ButtonList1_Click(object sender, EventArgs e)
??????? {
??????????? Response.Write("AAAAAAAAAAAAAAAAAAAAAA");
??????? }
??? }
}
我们进一步的构造一个带数据参数的事件，利用.net? 自带的? commandeventargs，当然可以自己构造一个，去继承? eventargs? 就行了。
将上面的委托和事件改改，如下 ：
public delegate void ClickCmandHandler(object sender,CommandEventArgs e);
??? public partial class buttonList : System.Web.UI.UserControl
??? {
??????? public event ClickCmandHandler Click;
??????? protected void OnClick(CommandEventArgs e)
??????? {
??????????? if (Click != null)
??????????????? Click(this, e);
??????? }
??????? protected void lbnHome_OnClick(object sender,CommandEventArgs e)
??????? {
??????????? this.OnClick(e);
??????? }
??? }
页面的文件也相应做下修改：
? <%@ Control Language="C#" AutoEventWireup="true" CodeBehind="buttonList.ascx.cs" Inherits="stoneControls.buttonList" %>
<table>
<tr>
?? <td>
?? <asp:LinkButton ID="lbnHome" runat="Server" CommandName="HOME" Text="首页" OnCommand="lbnHome_OnClick">
?? </asp:LinkButton>??
?? </td>
?? <td>
?? <asp:LinkButton ID="lbnChannel" runat="Server" CommandName="CHANNEL" Text="频道" OnCommand="lbnHome_OnClick">
?? </asp:LinkButton>??
?? </td>
?? <td>
?? <asp:LinkButton ID="lbnColumn" runat="Server" CommandName="COLUMN" Text="栏目" OnCommand="lbnHome_OnClick">
?? </asp:LinkButton>??
?? </td>
?? <td>
?? <asp:LinkButton ID="lbnSoft" runat="Server" CommandName="DETAILS" Text="明细" OnCommand="lbnHome_OnClick">
?? </asp:LinkButton>??
?? </td>
? </tr>
</table>
调用控件改动下注册的参数就可以了。。
??? protected void Page_Load(object sender, EventArgs e)
??????? {
??????????? this.ButtonList1.Click+=new ClickCmandHandler(ButtonList1_Click);
??????? }
??????? protected void ButtonList1_Click(object sender,CommandEventArgs e)
??????? {
??????????? if (e.CommandName == "DETAILS")
??????????? {
??????????? }
??????????? if (e.CommandName == "COLUMN")
??????????? {
??????????? }
??????????? if (e.CommandName == "CHANNEL")
??????????? {
??????????? }
??????????? if (e.CommandName == "HOME")
??????????? {
??????????? }
??????? }
这样子一个简单的页面导航的控件基本出来，根据在? commandname? 的不同跳转！！