October 2010
Intermediate to advanced
1920 pages
73h 55m
English
Content preview from ASP.NET 4 Unleashed
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UpdatePanel Performance
The UpdatePanel hides the normal page postback by performing an asynchronous (sneaky) postback. Even though you can use the UpdatePanel to trick your users into believing that a postback is not occurring, it is important that you do not trick yourself.
You can use either of the two debugging tools discussed earlier in this chapter to view the Ajax request and response that occur during an asynchronous postback. For example, Listing 38.20 contains a typical Ajax request, and Listing 38.21 contains a typical Ajax response.
Listing 38.20. Ajax Request
Listing 38.21. Ajax Response
The Ajax request and response in Listing ...