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Some more information on the update flow of the ajax.net update panels

Good day,

we just migrated from asp.net 1.1 to asp.net 2.0. We are using ajax update panels.

I read in the Apress book (Pro asp.net 2008) that when using the refresh panel, you are not reducing the amount of bandwidth transferred as the entire page is still being submitted.

In this regard, I also read on many websites that it is better to use multiple updatable packages instead of one containing the entire page in order to "reduce the amount of transmitted bandwidth." In my opinion there is a contradiction with the Apress book and I was wondering what you guys think.

Is it better to use just one refreshed panel containing the whole page, or many of them? Performance is my main concern.

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2 answers


It depends on how many parts of your page you want to download separately.

Each panel = separate upgradeable part



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Depending on how many parts of your page you want to download separately, you need a panel for each part.

The complete viewstate is always posted postback to the server.



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