假定用戶控件(UserControl.ascx)中包含按鈕控件 AButton，希望實(shí)現(xiàn)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 的事件委托，如 ClickEventHandler;
2. 在 UserControl 類中聲明事件，如 Click;
3. 在 UserControl 類中定義引發(fā)事件的方法，如 OnClick()方法;
4. 在 UserControl 類的相關(guān)方法中調(diào)用引發(fā)事件的方法，如在 Button_Click()中調(diào)用 OnClick()。
下面這個例子是簡單的響應(yīng)點(diǎn)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(biāo)題頁</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");
}
}
}
我們進(jìn)一步的構(gòu)造一個帶數(shù)據(jù)參數(shù)的事件，利用.net 自帶的 commandeventargs，當(dāng)然可以自己構(gòu)造一個，去繼承 eventargs 就行了。
將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);
}
}
頁面的文件也相應(yīng)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(xì)" OnCommand="lbnHome_OnClick">
</asp:LinkButton>
</td>
</tr>
</table>
調(diào)用控件改動下注冊的參數(shù)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(dǎo)航的控件基本出來，根據(jù)在 commandname 的不同跳轉(zhuǎn)！！
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