Submitting an individual region rather than everything on a page

I'm sure I have seen an online example of a page where just the region is submitted so that is the only section of the page that gets re-drawn
but after searching all the usual supsects off here
http://www.apexblogs.info/pls/apex/f?p=113:8:0
but I cannot seem to find it
does anybody have any ideas ??
any help greatly appreciated
Cheers
Chris

Hi Chris,
There are certainly a good number of Apex/Ajax examples out there. For an example, see: [http://htmldb.oracle.com/pls/otn/f?p=20297:14] (this is a typical example of cascading select lists).
The construct of an Ajax call is pretty much the same regardless of what you are trying to do. There are a few things to bear in mind:
1 - You need an Application Process that runs On Demand (create this through Shared Components). This process can run any PL/SQL code you need - including updating tables (in the example above, this just retrieves values and constructs select lists from them)
2 - You need one or more Items (usually Application Items - again, created through Shared Components) to receive values to be used in your PL/SQL code. Each Item is given its value in the Ajax call using get.add(). Though the process can use any item value stored in session state.
3 - You need to handle any data or value(s) returned by the process - either a success message, for example, or data for output onto the page. The format of the output is determined by the process - it could be XML, plain text or htp.p() output.
4 - The Ajax code needs to be triggered by some user action - typically clicking a button or changing a select list value.
Andy

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