using $('#sort_table').dataTable().fnDraw(true); datatable content not updated

i have a edit button in repeater control. on editing and saving the value in repeater control is not refreshed.

on success of saving i am calling Function LoadRepeater() which bring a refreshed data from database and replaced with old data in repeater control.

function LoadRepeater() {

    var content = ""
    $.ajax({
        type: "POST",
        url: "wfPARM.aspx/BindRepeter",
        data: '{}',
        contentType: "application/json; charset=utf-8",
        success: function (msg) {
            for (var i = 0; i < msg.d.length; i++) {
                content += '<tr>';
                content += '<td style="padding-left:0%">' + msg.d[i].ParmType + '</td>';
                content += '<td style="padding-left:0%">' + msg.d[i].ParmCode + '</td>';

                content += '<td><button type="button" class="DisplayData fa fa-edit" title="Edit" txt=' + msg.d[i].ParmCode + ' val=' + msg.d[i].ParmType + ' style="background-color:transparent;border:none;"></button>  </td>';
                content += '</tr>';
            }
            $('#sort_table').find('tbody').empty().append(content);
            $('#sort_table').dataTable().fnDraw(true);               

        }
    });
}