how to get textbox value from jquery to c#

i created textboxes dynamically using Jquery.Now i want to get the textbox id in C#.
$(document).ready(function(){     var id = 3,max = 10,append_data;          /*If the add icon was clicked*/     $(".add").live('click',function(){         if($("div[id^='txt_']").length <10){ //Don't add new textbox if max limit exceed         $(this).remove(); //remove the add icon from current text box         var append_data = '<div id="txt_'+id+'" class="txt_div" style="display:none;"><div class="left"><input type="text" id="TextBox'+id+'"/></div><div class="right"><img src="Images/add.png" class="add"/> <img src="Imag ...