Angular + Material – How to refresh a data source (mat-table)

I don’t know if the ChangeDetectorRef was required when the question was created, but now this is enough:

import { MatTableDataSource } from '@angular/material/table';

// ...

dataSource = new MatTableDataSource<MyDataType>();

refresh() {
  this.myService.doSomething().subscribe((data: MyDataType[]) => {
    this.dataSource.data = data;
  }
}

Example:
StackBlitz