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It supports any parallelogram, and can use any virtual path for loading the overlay image.
You can set a cache timeout, optionally specify parameter dependencies, and ASP.
Working on different projects many times I have come to the point where I needed to get notifications from a database implemented. NET stack of technologies and MS SQL Server, so implementing notifications with MS SQL Server is usually what I have to do.
So what options does one have when you your application needs to be informed when there are changes in the SQL Server data?
(Egg Head Cafe.com), which were partly derived from Rob Howard's technique here .
It's more efficient to distribute some of that data to your webserver, and only hit the database when needed.
Here's a way to implement a database cache dependency in an ASP. At a high level, it uses a timer on a background thread (in an HTTP Module) that checksums database tables. Way back in December I posted about a CMS driven ASP. Many websites make one or many database requests for relatively static data every page hit - if you're componentizing your pages with user or server controls, they may each make separate trips to the database.