ASP.NET Tutorial/ASP.net Controls/Substitution

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Using the substitution control (C#)

<%@ 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">
<%@ OutputCache Duration="30" VaryByParam="None" %>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Substitution Control</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" Runat="server" Text="Label"></asp:Label>
        <br />
        <asp:Substitution ID="Substitution1" Runat="server"
             methodName="GetUpdatedTime" />
        <br />
    </div>
    </form>
</body>
</html>
File: 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 
{
    public static string GetUpdatedTime(HttpContext context)
    {
        return DateTime.Now.ToLongTimeString() + " by " +
                context.User.Identity.Name;
    }
    protected void Page_Load(object sender, EventArgs e)
    {
        Label1.Text = DateTime.Now.ToLongTimeString();
    }
}


Using the substitution control (VB)

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ OutputCache Duration="30" VaryByParam="None" %>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Substitution Control</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Label ID="Label1" Runat="server" Text="Label"></asp:Label>
        <br />
        <asp:Substitution ID="Substitution1" Runat="server"
             methodName="GetUpdatedTime" />
        <br />
    </div>
    </form>
</body>
</html>
File: Default.aspx.vb

Partial Class _Default
    Inherits System.Web.UI.Page
    Public Shared Function GetUpdatedTime(ByVal context As HttpContext) As String
        Return DateTime.Now.ToLongTimeString() + " by " + _
                context.User.Identity.Name
    End Function
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) _
            Handles Me.Load
        Label1.Text = DateTime.Now.ToLongTimeString()
    End Sub
End Class
Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/ASP.net_Controls/Substitution&oldid=3354»