title: datatable redraw with updated data
body: <p>Hello I'm instantiating my datatable on the following way:</p>
  
  <pre><code>var dataTableOption = { "pageLength" : 5,
                          "pagingType": "simple",
                          "info": false ,
                          "searching": false,
                          "select" : {
                                       style: 'single'
                                     },
                          "lengthChange": false,
  
                          "columnDefs": [
                                          {
                                              "targets": [ 0 ],
                                              "visible": false,
                                              "searchable": false
                                          }
                                        ],
                          data : this.workdata,
  
                          columns : [ { data: 'id' },
                                      { data: 'itemno' },
                                      { data: 'artnr' },
                                      { data: 'quan' },
                                    ]
  
  
                        };
  
  this.dt = $('#dt-overview').DataTable(dataTableOption );
  </code></pre>
  
  <p>when my workdata is changing because of events in application logic, I want that the data of datatable to beupdated and the table should display new data. In the debugger I've seen, that also rows data is not updated. How can I realize it?</p>
  
  <p>thanks in advance!</p>