[angular] Handling queryParams

We can navigate to edit component with this code.

this.router.navigate(['edit'],{relativeTo: this.route});

but here is my question.

How to preserve the queryParams?

It is simple!. look at this one.

this.router.navigate(['edit'],{relativeTo: this.route, queryParamsHandling: 'preserve'});

just Add queryParamsHandling with preserve.