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ASP.NET Tutorial/Cache/Expiration - История изменений
2026-04-29T21:48:59Z
История изменений этой страницы в вики
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http://nfex.ru/index.php?title=ASP.NET_Tutorial/Cache/Expiration&diff=2905&oldid=prev
в 15:30, 26 мая 2010
2010-05-26T15:30:57Z
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Admin: 1 версия
2010-05-26T11:57:26Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== Expiring the Page Output Cache Programmatically==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
File: Default.aspx<br />
<%@ Page Language="C#" %><br />
<%@ OutputCache Duration="3600" VaryByParam="none" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<title>Product List</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<%= DateTime.Now.ToString("T") %><br />
<hr /><br />
<asp:GridView<br />
id="grdProducts"<br />
DataSourceID="srcProducts"<br />
Runat="server" /><br />
<asp:SqlDataSource<br />
id="srcProducts"<br />
ConnectionString="<%$ ConnectionStrings:Products %>"<br />
SelectCommand="SELECT Title, Director FROM Products"<br />
Runat="server" /><br />
<br /><br /><br />
<a href="NextPage.aspx">Add Product</a><br />
</div><br />
</form><br />
</body><br />
</html><br />
File: NextPage.aspx<br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<script runat="server"><br />
protected void dtlProduct_ItemInserted(object sender, DetailsViewInsertedEventArgs e)<br />
{<br />
HttpResponse.RemoveOutputCacheItem(Page.ResolveUrl("~/Default.aspx"));<br />
Response.Redirect("~/Default.aspx");<br />
}<br />
</script><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<title>Add Product</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<h1>Add Product</h1><br />
<asp:DetailsView<br />
id="dtlProduct"<br />
DefaultMode="Insert"<br />
DataSourceID="srcProducts"<br />
AutoGenerateRows="false"<br />
AutoGenerateInsertButton="true"<br />
Runat="server" OnItemInserted="dtlProduct_ItemInserted"><br />
<Fields><br />
<asp:BoundField<br />
DataField="Title"<br />
HeaderText="Title:" /><br />
<asp:BoundField<br />
DataField="Director"<br />
HeaderText="Director:" /><br />
</Fields><br />
</asp:DetailsView><br />
<asp:SqlDataSource<br />
id="srcProducts"<br />
ConnectionString="<%$ ConnectionStrings:Products %>"<br />
InsertCommand="INSERT Products (Title, Director)<br />
VALUES (@Title, @Director)"<br />
Runat="server" /><br />
</div><br />
</form><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Using an Absolute Cache Expiration Policy==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"<br />
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<title>DataSource Absolute Cache</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<asp:GridView<br />
id="grdProducts"<br />
DataSourceID="srcProducts"<br />
Runat="server" /><br />
<asp:SqlDataSource<br />
id="srcProducts"<br />
EnableCaching="True"<br />
CacheDuration="3600"<br />
SelectCommand="SELECT * FROM Products"<br />
ConnectionString="<%$ ConnectionStrings:Products %>"<br />
Runat="server" /><br />
</div><br />
</form><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Using a Sliding Cache Expiration Policy==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
The cache duration is set to 15 seconds. <br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"<br />
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><br />
<script runat="server"><br />
protected void srcProducts_Selecting(object sender, SqlDataSourceSelectingEventArgs e)<br />
{<br />
lblMessage.Text = "Selecting data from database";<br />
}<br />
</script><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<title>DataSource Sliding Cache</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<br />
<asp:Label<br />
id="lblMessage"<br />
EnableViewState="false"<br />
Runat="server" /><br />
<asp:GridView<br />
id="grdProducts"<br />
DataSourceID="srcProducts"<br />
Runat="server" /><br />
<asp:SqlDataSource<br />
id="srcProducts"<br />
EnableCaching="True"<br />
CacheExpirationPolicy="Sliding"<br />
CacheDuration="15"<br />
SelectCommand="SELECT * FROM Products"<br />
ConnectionString="<%$ ConnectionStrings:Products %>"<br />
OnSelecting="srcProducts_Selecting"<br />
Runat="server" /><br />
</div><br />
</form><br />
</body><br />
</html></source></div>
Admin