If you need to update one row of your datatable you can use the DataTableService to update it. To update a single row you can use the rowUpdate subject. The model to update the DataTable require the ID of the row you want change and the new data Object of the row

DataRowUpdateModel {
    obj: any;
    id: string;

For example if your table use entry nodes you can pass:{id:, obj: {entry: node}});

As good practice is better to provide a DataTableService in the component where you are going to deliver the new object

    selector: 'app-files-component',
    templateUrl: './files.component.html',
    styleUrls: ['./files.component.scss'],
    encapsulation: ViewEncapsulation.None,
    providers: [
class FilesComponent implements OnInit {

    constructor(private dataTableService: DataTableService,
                private nodeService: NodesApiService) {
    ngOnInit() {
        this.nodeService.nodeUpdated.subscribe((node) => {
  {id:, obj: {entry: node}});

See also

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