Hi kirank28,

Do you mean the autocomplete sample of http://www.aspsnippets.com/Articles/Using-jQuery-AutoComplete-Plugin-in-ASP.Net.aspx will auto submit page after select any item?

the sample in that link is simple below and there is no submit action on select function,

<script type="text/javascript">

    $(document).ready(function() {

        $("#<TextBoxControlId>").autocomplete('<Url of handler>');

    });

</script>

 if you want to do something with the select function of autocomplete, try the method Wozer suggested.

 $(".AutoComp").autocomplete({ 
        source: function(request, response) { 
            ...
        }, 
        select: function (e, i) { 
           //change the code to implement your requirement here
        } 
    });

If this can not solve your problem, please explain your situation in more detail for anyone to help you. Thanks.