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Chapter 14: Web
{
// Add the sqlCache database entry
// to web.config.
TestConfig( );
// Now redirect to ourselves adding a query string.
// We do this so that the change we made to
// web.config gets picked up for the code in
// CreateSqlCacheDependency and SetupCacheDependencies.
// as it depends on that configuration being present.
// If you just create the entry and call the setup
// code in the same page instance, the internal
// configuration stuff doesn't refresh and you get
// an exception when the code can't find the sqlCache
// section it needs.
Response.Redirect(Request.RawUrl + "?run=1");
}
else
{
// Run 14.10.
CreateSqlCacheDependency( );
// Run 14.11.
SetupCacheDependencies( );
}
See Also
See Recipes 14.10 and 14.11; see the “WebConfigurationManager Class” and
“System.Configuration Namespace” topics in the MSDN documentation.
14.16 Working with HTML
Problem
You need to parse some HTML to get certain values from it, but you don’t want to
write all of the HTML parsing logic yourself.
Solution
Use the Microsoft.MSHTML Primary Interop Assembly wrapper and let the Internet
Explorer parsing engine do the work. The first thing that has to happen is to estab-
lish a reference to the
MSHTML control, which is located in the Program Files\Microsoft.
NET\Primary Interop Assemblies ...