ASP.NET Tutorial/Response/Cache — различия между версиями

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Версия 15:30, 26 мая 2010

SQL Server cache invalidation programmatically

Dim myDependency As SqlCacheDependency = New SqlCacheDependency("Northwind", "Customers")
Response.AddCacheDependency(myDependency)
Response.Cache.SetValidUntilExpires(true)
Response.Cache.SetExpires(DateTime.Now.AddMinutes(60))
Response.Cache.SetCacheability(HttpCacheability.Public)


Using HTTP Headers to force the browser not to cache on the client-side (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>
       
    </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 
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Response.Cache.SetCacheability(HttpCacheability.NoCache);
        Response.Cache.SetNoStore();
        Response.Cache.SetExpires(DateTime.MinValue);
        Response.Write(DateTime.Now.ToLongTimeString());
    }
}


Using HTTP Headers to force the browser not to cache on the client-side (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>
     
    </div>
    </form>
</body>
</html>
File: Default.aspx.vb
Imports System.Web
Partial Class _Default
    Inherits System.Web.UI.Page
   
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs)
        Response.Cache.SetCacheability(HttpCacheability.NoCache)
        Response.Cache.SetNoStore()
        Response.Cache.SetExpires(DateTime.MinValue)
        Response.Write(DateTime.Now.ToLongTimeString())
    End Sub
End Class
Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/Response/Cache&oldid=3454»