asp.net 单值绑定,使用<%$ %> 方式
2008-03-24 09:36 齐天大圣 阅读(228) 评论(0) 编辑 收藏 举报示例：
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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> <asp:Label ID="appSetting1" runat="server" Text='<%$ AppSettings:key1 %>' /> <asp:Label ID="expressionBuilder1" runat="server" Text='<%$ Code:DateTime.Now %>' /> </div> </form></body></html>web.config
<appSettings> <add key="key1" value="Hello World!"/> </appSettings><compilation debug="true"><expressionBuilders><add expressionPrefix="Code" type="expressionBuilder"/></expressionBuilders></compilation>appCode中的expressionBuilder类
1using System;
2using System.Data;
3using System.Configuration;
4using System.Linq;
5using System.Web;
6using System.Web.Security;
7using System.Web.UI;
8using System.Web.Compilation;
9using System.Web.UI.HtmlControls;
10using System.Web.UI.WebControls;
11using System.Web.UI.WebControls.WebParts;
12using System.Xml.Linq;
13using System.CodeDom;
14/// <summary>
15
/// Summary description for expressionBuilder
16/// </summary>
17
///
18[ExpressionPrefix("Code")]
19public class expressionBuilder: ExpressionBuilder
20{
21 public expressionBuilder()
22
{
23 //
24 // TODO: Add constructor logic here
25 //
26
27
}
28 public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)
29 {
30 return new CodeSnippetExpression(entry.Expression);
31 }
32}
33
using System;2
using System.Data;3
using System.Configuration;4
using System.Linq;5
using System.Web;6
using System.Web.Security;7
using System.Web.UI;8
using System.Web.Compilation;9
using System.Web.UI.HtmlControls;10
using System.Web.UI.WebControls;11
using System.Web.UI.WebControls.WebParts;12
using System.Xml.Linq;13
using System.CodeDom;14
/// <summary>15
/// Summary description for expressionBuilder16
/// </summary>17
/// 18
[ExpressionPrefix("Code")]19
public class expressionBuilder: ExpressionBuilder20
{21
public expressionBuilder()22
{
23
//24
// TODO: Add constructor logic here25
//26
27
}28
public override CodeExpression GetCodeExpression(BoundPropertyEntry entry, object parsedData, ExpressionBuilderContext context)29
{30
return new CodeSnippetExpression(entry.Expression);31
}32
}33
