1reloadComponent() {
2  let currentUrl = this.router.url;
3      this.router.routeReuseStrategy.shouldReuseRoute = () => false;
4      this.router.onSameUrlNavigation = 'reload';
5      this.router.navigate([currentUrl]);
6  }

1this.router.navigateByUrl('/RefreshComponent', { skipLocationChange: true }).then(() => {
2    this.router.navigate(['Your actualComponent']);
3}); 

1DeleteEmployee(id:number)
2  {
3    this.employeeService.deleteEmployee(id)
4    .subscribe( 
5      (data) =>{
6        console.log(data);
7        this.ngOnInit();
8      }),
9      err => {
10        console.log("Error");
11      }   
12  }
13