Save data in Database on TextBox enter key press using jQuery in ASP.Net

how can save data in webform in database in asp.net webform on enter key press.Enter key code is 13.

on textbox if i click enter it will save in database.in webform i didn't find any keypress event.

$('[id*=txtbox]').keypress(function(e){
        if (e.keyCode == 13) {
var value=document.getElementById("txtbox").value