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File: Control.ascx
<%@ Control Language="C#" ClassName="ProductFileDependency"
%> <%@ OutputCache Duration="9999" VaryByParam="none" %>
<script runat="server">
void Page_Load()
{
CacheDependency depend = new CacheDependency(MapPath("~/Products.xml"));
this.CachePolicy.Dependency = depend;
}
</script>
User Control Time:
<%= DateTime.Now.ToString("T") %>
<hr />
<asp:GridView
id="grdProducts"
DataSourceID="srcProducts"
Runat="server" />
<asp:XmlDataSource
id="srcProducts"
DataFile="Products.xml"
Runat="server" />
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