Considering caching of webpages, like what is discussed on pages 594 to 599 in the book, I am wondering can you not also cache specific partial parts of a webpage as well? Can you not take a part of a webpage that is contained under opening and closing <div> tags and cache that as well? As I recall the previous book on ASP.NET 4.0 had examples of partial page cacheing? What about cacheing a grid or a drop down list on page? Can you cache them as well? What about cacheing .ascx files, since they are reused on a regular basis, can you not have them cached and have a short cache duration of maybe 1 or 2 minutes to speed up or enhance scalability of your application?

You can't do partial page caching when using output caching (unless you use the Substitution control which I don't recommend). Instead, use User Controls for those parts you want to cache. So if you want to cache a grid, add it to a user control and then add that control to the page.

Be careful though: things like grid tend to contain dynamic data that you don't want to cache, or at least not for too long.

Do you ever Google before asking questions like this? You will find so much more information and learn so much more if you Google for some core terms and then read the first 10 hits or so.

https://www.google.com/#output=searc...=1050&bih=1245

Imar

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Imar Spaanjaars
http://Imar.Spaanjaars.Com
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Author of Beginning ASP.NET 4.5 : in C# and VB, Beginning ASP.NET Web Pages with WebMatrix
and Beginning ASP.NET 4 : in C# and VB.
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