Say, you have a table with lots of radio buttons. And a submit button for submitting the form.
Follow these steps:
2)When the user clicks on the submit button, in its event handler function call collector function
and make an ajax get request to the server with the output of collector function as query string.
eg. make request "arrylist.aspx?q=c#t#b"
3)Get that query string at server side, and split the ids through string's split function
and store them to array list.
Best of Luck..