更新：2007 年 11 月
获取网页的缓存策略（例如：过期时间、保密性设置和变化条款）。
（在 System.Web.dll 中）
Public ReadOnly Property Cache As HttpCachePolicy
Dim instance As HttpResponse
Dim value As HttpCachePolicy
value = instance.Cache
public HttpCachePolicy Cache { get; }
public:
property HttpCachePolicy^ Cache {
HttpCachePolicy^ get ();
}
/** @property */
public HttpCachePolicy get_Cache()
public function get Cache () : HttpCachePolicy
下面的示例将当前缓存策略的属性写入 HTTP 输出流。
Response.Cache.SetExpires(DateTime.Now.AddSeconds(60))
Response.Cache.SetCacheability(HttpCacheability.Public)
Response.Cache.SetValidUntilExpires(False)
Response.Cache.VaryByParams("Category") = True
If Response.Cache.VaryByParams("Category") Then
'...
End If
Response.Cache.SetExpires(DateTime.Now.AddSeconds(60));
Response.Cache.SetCacheability(HttpCacheability.Public);
Response.Cache.SetValidUntilExpires(false);
Response.Cache.VaryByParams["Category"] = true;
if (Response.Cache.VaryByParams["Category"])
{
//...
}
get_Response().get_Cache().SetExpires(DateTime.get_Now().
AddSeconds(60));
get_Response().get_Cache().SetCacheability(HttpCacheability.Public);
get_Response().get_Cache().SetValidUntilExpires(false);
get_Response().get_Cache().get_VaryByParams().
set_Item("Category", true);
if (get_Response().get_Cache().get_VaryByParams().
get_Item("Category")) {
//...
}
Response.Cache.SetExpires(DateTime.Now.AddSeconds(60))
Response.Cache.SetCacheability(HttpCacheability.Public)
Response.Cache.SetValidUntilExpires(false)
Response.Cache.VaryByParams("Category") = true
if(Response.Cache.VaryByParams("Category")){
//...
}
Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
.NET Framework 和 .NET Compact Framework 并不是对每个平台的所有版本都提供支持。有关支持的版本的列表，请参见.NET Framework 系统要求。
.NET Framework
受以下版本支持：3.5、3.0、2.0、1.1、1.0
参考