You can create a XML file and send it. Parse it in the code behind. Usually developers do so, for CALLBACK mechanism.
When huge list of information that needs to be passed to Code Behind from JS on CALLBACK, best way is to form the XML in JS (string concatenation) and send it to Code behind. There use a serializer object to convert that to a specific class file (object).
When huge list of information that needs to be passed to Code Behind from JS on CALLBACK, best way is to form the XML in JS (string concatenation) and send it to Code behind. There use a serializer object to convert that to a specific class file (object).