how to fire click event for the textbox

how to fire click event for the textbox which is put under the gridview in item templat开发者_运维百科e in asp.net?

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It is the same as making a clickevent outside a gridview. im using jqueryto do this

 <asp:textbox id="textbox1" ontextchanged="textbox1_textchange">
 <asp:linkbutton runat="server" id="hiddenbtn" onclick="textbox_click"/></asp:textbox>
<script>
$(document).ready(function() {
  $("#textbox1").click(function () {
    $('#hiddenbtn').trigger('click');
  });
});
</script>