Hi Amol111,

To reset a search filter just call search() again with an empty string. Similarly you can clear the value of an input by setting its value to an empty string.

If you implement this functionality in page navigation then textbox will be cleared. But you are not able to show all records in the gridview.

For show all records you have to redraw the table. If you redraw the table then page navigation will not work.

Refer below code.

<script type="text/javascript">
    $(function () {
        var table =$('[id*=gvCustomers]')
        .prepend($("<thead></thead>")
        .append($(this).find("tr:first")))
        .DataTable({
            "responsive": true,
            "sPaginationType": "full_numbers",
            "bPaginate": true,
            "bSort": true,
            "iDisplayLength": 2,
            "stateSave": true,
            "stateDuration": 60 * 1
        });
        table.on('page.dt', function () {
            $('input[type=search]').val(''); // Clear Search input.
            //table.search('').draw(); // Rebind all data.
        });
    });
    //On UpdatePanel Refresh.
    var prm = Sys.WebForms.PageRequestManager.getInstance();
    if (prm != null) {
        prm.add_endRequest(function (sender, e) {
            if (sender._postBackSettings.panelsToUpdate != null) {
                var table =$('[id*=gvCustomers]')
                .prepend($("<thead></thead>")
                .append($(this).find("tr:first")))
                .DataTable({
                    "responsive": true,
                    "sPaginationType": "full_numbers",
                    "bPaginate": true,
                    "bSort": true,
                    "iDisplayLength": 2,
                    "stateSave": true,
                    "stateDuration": 60 * 1
                });
                table.on('page.dt', function () {
                    $('input[type=search]').val(''); // Clear Search input.
                    //table.search('').draw(); // Rebind all data.
                });
            }
        });
    };
</script>