How asp form post back is handeled ?
thanks
vin

Hi Vin!!
As name suggested "PostBack" means posting the form to the same page.
now you can post the form on--> onclick,onchange or whatever the action user performed on the control(fieldvalues of the document) of the page.
It's up to you when to perform post back ,and what data you need to preserve during postbacks.
In classic ASP you also need to check whether the page is first time loaded,since at that time no request("countrycode") will be found.in subsequent post back you can get the request("countrycode") value and set the required dropdown list box values and other control values.

Hope this will help you


Cheers :)

vinod

Thanks