title: asp.net update trigger from multiple controls in gridview
body: <p>I have a gridview with multiple checkboxes, sometimes 40+. I want the checkboxes to call a .net function in the code behind when clicked. Normally this would be simple if the checkboxes were outside of the gridview. But because they are in the gridview and I don't know how many there are, I don't know their id's before runtime. </p>
  
  <p>I am at the point right now that when you click a checkbox, a jQuery script returns the id and value of the checkbox. Unfortunately, I don't know how to pass the value to a function - that will in turn update another gridview. </p>
  
  <p>AFAIK my only option is to get the id's of the controls (checkboxes) before page load and to programatically add then to the update trigger portion of the update panel. Is there any other way to say 'if any checkboxes are clicked, run this'?</p>