Angular 7 filter pipe data count

Question

Hello Experts ,

 

I have appiled search filter its working fine , but i want to display no data message (ng-template) if filter count is zero.

 

i'm getting same count even data is filtered . 

<tr *ngFor="let task of tasks | async | tableFilter : searchText:'TASK_ID'| tableSort :direction:prop;trackBy:trackById;">