假定用戶控件(UserControl.ascx)中包含按鈕控件AButton，希望實現按Button按鈕時，包含該用戶控件的頁面可以接收到事件。
UserControl.ascx.cs中的處理：
1. 定義public的事件委託，如ClickEventHandler;
2. 在UserControl類中聲明事件，如Click;
3. 在UserControl類中定義引發事件的方法，如OnClick()方法;
4. 在UserControl類的相關方法中調用引發事件的方法，如在Button_Click()中調用OnClick()。
下面這個例子是簡單的響應點擊事件
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="首頁" 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>無標題頁</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<uc1:buttonList ID="ButtonList1" runat="server" OnClientClick="myclick"/>
</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");
}
}
}
我們進一步的構造一個帶數據參數的事件，利用.net自帶的commandeventargs，當然可以自己構造一個，去繼承eventargs就行了。
將上面的委託和事件改改，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);
}
}
頁面的文件也相應做下修改：
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="buttonList.ascx.cs" Inherits="stoneControls.buttonList" %>
<table>
<tr>
<td>
<asp:LinkButton ID="lbnHome" runat="Server" CommandName="HOME" Text="首頁" OnCommand="lbnHome_OnClick">
</asp:LinkButton>
</td>
<td>
<asp:LinkButton ID="lbnChannel" runat="Server" CommandName="CHANNEL" Text="頻道" OnCommand="lbnHome_OnClick">
</asp:LinkButton>
</td>
<td>
<asp:LinkButton ID="lbnColumn" runat="Server" CommandName="COLUMN" Text="欄目" OnCommand="lbnHome_OnClick">
</asp:LinkButton>
</td>
<td>
<asp:LinkButton ID="lbnSoft" runat="Server" CommandName="DETAILS" Text="明細" OnCommand="lbnHome_OnClick">
</asp:LinkButton>
</td>
</tr>
</table>
調用控件改動下注冊的參數就可以了。。
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")
{
}
}
這樣子一個簡單的頁面導航的控件基本出來，根據在commandname的不同跳轉！！