System.Web.UI.MasterPage 一点理解
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<!-- 版模页 -->
<%@ Master Language="C#" AutoEventWireup="true" Inherits="DuwControls.DuwDefaultMasterPage" %>
<!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">
<asp:contentplaceholder id="CHead" runat="server">
</asp:contentplaceholder>
</head>
<body>
<form id="form1" runat="server">
<asp:ContentPlaceHolder ID="ScriptMan" runat="server">
ScriptMain
</asp:ContentPlaceHolder>
<asp:ContentPlaceHolder ID="CTop" runat="server">
CTop
</asp:ContentPlaceHolder>
<asp:ContentPlaceHolder ID="CLeft" runat="server">
CLeft
</asp:ContentPlaceHolder>
<asp:ContentPlaceHolder ID="CMain" runat="server">
CMain
</asp:ContentPlaceHolder>
<asp:ContentPlaceHolder ID="CRight" runat="server">
CRight
</asp:ContentPlaceHolder>
<asp:ContentPlaceHolder ID="CFoot" runat="server">
CFoot
</asp:ContentPlaceHolder>
</form>
</body>
</html>
ContentPlaceHolder 为模版部分的占用位置
//模版页后台,继承自系统 System.Web.UI.MasterPage
using System;
using System.Collections.Generic;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web;
namespace DuwControls
...{
public class DuwDefaultMasterPage : MasterPage
...{
private ContentPlaceHolder _CHead;
private ContentPlaceHolder _CTop;
private ContentPlaceHolder _CLeft;
private ContentPlaceHolder _CMain;
private ContentPlaceHolder _CRight;
private ContentPlaceHolder _CFoot;
private ContentPlaceHolder _ScriptMan;
public ContentPlaceHolder CHead ...{ get ...{ return _CHead; } }
public ContentPlaceHolder CTop ...{ get ...{ return _CTop; } }
public ContentPlaceHolder CLeft ...{ get ...{ return _CLeft; } }
public ContentPlaceHolder CMain ...{ get ...{ return _CMain; } }
public ContentPlaceHolder CRight ...{ get ...{ return _CRight; } }
public ContentPlaceHolder CFoot ...{ get ...{ return _CFoot; } }
public ContentPlaceHolder ScriptMan ...{ get ...{ return _ScriptMan; } }
protected override void OnInit(EventArgs e)
...{
foreach (Control ctrl in this.Controls)
...{
if (ctrl is System.Web.UI.HtmlControls.HtmlHead)//模版Head头部部分
...{
foreach (Control ctl in ctrl.Controls)
...{
if (ctl is ContentPlaceHolder)
...{
_CHead = ctl as ContentPlaceHolder;
}
}
}
else if (ctrl is System.Web.UI.HtmlControls.HtmlForm)//模版Form主体部分
...{
foreach (Control ctl in ctrl.Controls)
...{
if (ctl is ContentPlaceHolder)
...{
switch (ctl.ID)
...{
case "CTop":
_CTop = ctl as ContentPlaceHolder;
break;
case "CLeft":
_CLeft = ctl as ContentPlaceHolder;
break;
case "CMain":
_CMain = ctl as ContentPlaceHolder;
break;
case "CRight":
_CRight = ctl as ContentPlaceHolder;
break;
case "CFoot":
_CFoot = ctl as ContentPlaceHolder;
break;
case "ScriptMan":
_ScriptMan = ctl as ContentPlaceHolder;
break;
default:
break;
}
}
}
}
}
base.OnInit(e);
}
}
}
//页面.cs运用部分
using System;
using System.Collections.Generic;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
using DuwCompontents;
using System.Text.RegularExpressions;
using System.IO;
using System.Web;
namespace DuwControls
...{
public class DuwPage : Page
...{
属性#region 属性
public string SkinType
...{
get ...{ return _SkinType; }
set ...{ _SkinType = value; }
}
public int BoardID ...{ get ...{ return _BoardID; } set ...{ _BoardID = value; } }
#endregion
事件#region 事件
protected override void OnPreInit(EventArgs e)
...{
_SkinType = "wow";//修改页面的SkinType属性
this.MasterPageFile = "/Themes/wow/Default.master"; //修改模版页的原引用路径/Themes/Default/Default.master
DuwDefaultMasterPage dp = this.Master as DuwDefaultMasterPage;//取得页面的模版
dp.CTop //为模板中的CTop占位部分
base.OnPreInit(e);
}
}
}
//aspx页面部分
<%@ Page Language="C#" MasterPageFile="~/Themes/Default/Default.master" ValidateRequest="false"
Inherits="DuwControls.DuwPage" SkinType="default" %>
<asp:Content ID="Content1" ContentPlaceHolderID="CHead" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ScriptMan" Runat="Server">
</asp:Content>
<asp:Content ID="Content3" ContentPlaceHolderID="CTop" Runat="Server">
</asp:Content>
<asp:Content ID="Content4" ContentPlaceHolderID="CLeft" Runat="Server">
</asp:Content>
<asp:Content ID="Content5" ContentPlaceHolderID="CMain" Runat="Server">
</asp:Content>
<asp:Content ID="Content6" ContentPlaceHolderID="CRight" Runat="Server">
</asp:Content>
<asp:Content ID="Content7" ContentPlaceHolderID="CFoot" Runat="Server">
</asp:Content>
