SqlDependency="Northwind:Customers" : SQL Cache Dependencies « Cache « ASP.NET Tutorial
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<%@ Page Language="C#" AutoEventWireup="true"%>
<%@ OutputCache Duration="30" VaryByParam="none" SqlDependency="Northwind:Customers"%>
<script runat="server">
protected void Page_Load(object sender, System.EventArgs e)
{
Label1.Text = "Page created at " + DateTime.Now.ToShortTimeString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Sql Cache Invalidation</title>
</head>
<body>
<form id="form1" runat="server">
<asp:Label ID="Label1" Runat="server"></asp:Label><br />
<br />
<asp:GridView ID="GridView1" Runat="server" DataSourceID="SqlDataSource1">
</asp:GridView>
<asp:SqlDataSource ID="SqlDataSource1" Runat="server"
SelectCommand="Select * From Customers"
ConnectionString="<%$ ConnectionStrings:AppConnectionString1 %>"
ProviderName="<%$ ConnectionStrings:AppConnectionString1.providername %>">
</asp:SqlDataSource>
</form>
</body>
</html>
File: Web.config
<?xml version="1.0"?>
<configuration>
<appSettings/>
<connectionStrings>
<add name="AppConnectionString1" connectionString="Data Source=.\SQLEXPRESS;User ID=wrox;Password=wrox1*c;Database=Northwind;Persist Security Info=False" providerName="System.Data.SqlClient"/>
</connectionStrings>
<system.web>
<caching>
<sqlCacheDependency enabled="true">
<databases>
<add name="Northwind" connectionStringName="AppConnectionString1" pollTime="500"/>
</databases>
</sqlCacheDependency>
</caching>
<compilation debug="true" strict="false" explicit="true"/>
<pages>
<namespaces>
<clear/>
<add namespace="System"/>
<add namespace="System.Collections"/>
<add namespace="System.Collections.Specialized"/>
<add namespace="System.Configuration"/>
<add namespace="System.Text"/>
<add namespace="System.Text.RegularExpressions"/>
<add namespace="System.Web"/>
<add namespace="System.Web.Caching"/>
<add namespace="System.Web.SessionState"/>
<add namespace="System.Web.Security"/>
<add namespace="System.Web.Profile"/>
<add namespace="System.Web.UI"/>
<add namespace="System.Web.UI.WebControls"/>
<add namespace="System.Web.UI.WebControls.WebParts"/>
<add namespace="System.Web.UI.HtmlControls"/>
</namespaces>
</pages>
<authentication mode="Windows"/>
</system.web>
</configuration>