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给一个用户控件加自定义的事件

2006-09-06 23:39 561 查看

/*Title:给一个用户控件加自定义的事件
*Author: Alvin
*Date: Sep 6,2006
*Description: 给一个用户控件加自定义的事件并回传一个参数
*Environment: WinXP sp2,Vs2005 pro,.netFramework 2.0
*KeyWord: 给一个用户控件加自定义的事件并回传一个参数 UserControl
*/

下载
http://files.cnblogs.com/Alvin-ye/testForUserControlEvent.rar

Step 1

新建一个类:
CustomerEventArgs.cs

public class CustomerEventArgs : EventArgs
{
private int m_SelectId;

public int SelectId
{
get { return m_SelectId; }
set { m_SelectId = value; }
}
public CustomerEventArgs(int p_SelectId)
{
this.SelectId = p_SelectId;
}
}

Step 2
新建一个用户控件 Add new Web User Control
并在控件上放两个 Button 如下
WebUserControl.ascx

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="WebUserControl" %>
<asp:Button ID="Button1" runat="server" Text="Button" />
<asp:Button ID="Button2" runat="server" Text="Button" />

Step 3
打开WebUserControl.ascx.cs
3.1
定义一个代理类型

public event CustomerEventHandler customerEvent;
3.2
定义事件
public event CustomerEventHandler customerEvent;
3.3
定义方法 OncustomerEvent来处理事件
public virtual void OncustomerEvent(CustomerEventArgs e)
{
if (customerEvent != null)
{
customerEvent(this, e);
}
}

Step 4
给两个button 加上事件

WebUserControl.ascx

<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
<asp:Button ID="Button2" runat="server" Text="Button" OnClick="Button2_Click" />

WebUserControl.ascx.cs

protected void Button1_Click(object sender, EventArgs e)
{
OncustomerEvent(new CustomerEventArgs(1));
}
protected void Button2_Click(object sender, EventArgs e)
{
OncustomerEvent(new CustomerEventArgs(2));
}
Step 5
打开 default.aspx 引用并以上控件并写好事件

default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<%@ Register Src="WebUserControl.ascx" TagName="WebUserControl" TagPrefix="uc1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<uc1:WebUserControl ID="WebUserControl1" runat="server" OncustomerEvent="CustomerEvent" />

</div>
</form>
</body>
</html>

default.aspx.cs

using System;
using System.Data;
using System.Configuration;
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;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}
protected void CustomerEvent(object o, CustomerEventArgs e)
{
Response.Write(e.SelectId.ToString());

}
}

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