假定用户控件(UserControl.ascx)中包含按钮控件 AButton，希望实现按 Button 按钮时，包含该用户控件的页面可以接收到事件。
UserControl.ascx.cs 中的处理：
1. 定义 public 的事件委托，如 ClickEventHandler;
2. 在 UserControl 类中声明事件，如 Click;
3. 在 UserControl 类中定义引发事件的方法，如 OnClick()方法;
4. 在 UserControl 类的相关方法中调用引发事件的方法，如在 Button_Click()中调用 OnClick()。
下面这个例子是简单的响应点击事件
demo:buttonlist.aspx.cs
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 delegate void ClickEventHandler(object sender, EventArgs e);
public partial class buttonList : System.Web.UI.UserControl
{
public event ClickEventHandler Click;
protected void OnClick(EventArgs e)
{
if (Click != null)
Click(this, e);
}
protected void lbnHome_OnClick(object sender, EventArgs e)
{
this.OnClick(e);
}
}
}
demo:buttonlist.aspx
<%@ 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" 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！！
ASP.NET用户控件事件的定义和实践