Fire CheckBoxList SelectedIndexChanged event server side using jQuery

Sir i am using multiple checkboxlist to filter datalist on selection change event,but there are too many postbacks .I used jquery to fire selection changed event but event is not firing.

Code:

foreach(Listitem li in list.items)

{

if(li.selected)

{

Sending value to database and binding datalist on selection change event

}

}

Plz help.

Thankyou