Angular 2 – 刷新ngx数据表列表问题

<ngx-datatable class="material"
[rows]="rows"
[columnMode]="'force'"
[headerHeight]="40"
[footerHeight]="40"
[rowHeight]="30"
[externalPaging]="true"
[limit]="limit"
(select)='onSelect($event)'
(activate)='onActivate($event)'
[selected]="selected"
[selectionType]="'checkbox'">
<ngx-datatable-column
    [width]="30"
    [sortable]="false"
    [canAutoResize]="false"
    [draggable]="false"
    [resizeable]="false"
    [headerCheckboxable]="true"
    [checkboxable]="true">
  </ngx-datatable-column>
      <ngx-datatable-column name="Name">
        <ng-template let-value="value" ngx-datatable-cell-template>
            <div class="redNumber">{{value}}</div>
        </ng-template>
  </ngx-datatable-column>
  <ngx-datatable-column name="Title"></ngx-datatable-column>
  <ngx-datatable-column name="company"></ngx-datatable-column>
  <ngx-datatable-column name="Status" [cellClass]="getStatusClass">  
  </ngx-datatable-column>
<ngx-datatable-column name="Last connexion"></ngx-datatable-column>

当我单击触发以下showAll()方法的按钮时,没有任何反应,除非我再次单击,刷新列表,或者如果我单击一次,并调整浏览器窗口的大小,则刷新列表.
如何正确刷新列表？我究竟做错了什么？
在我的组件类中,我有这个：

export class M1OamRoomsListComponent{ 
    selected = [];
    public rows = [
      .... // list of users
    ];
public limit: number;

constructor(public translation: TranslationService){
    this.limit = 10;
}

getStatusClass({ row,column,value }): any {
    return {
        'disabled': value === 'Disabled','enabled': value === 'Enabled'
    };
}
onSelect({ selected }) {
    console.log('Select Event',selected,this.selected);

    this.selected.splice(0,this.selected.length);
    this.selected.push(...selected);
}

onActivate(event) {
    //console.log('Activate Event',event);
}
showAll(): void {
    this.limit = this.rows.length;
}
}