How to make a formControl readonly

Question

How to make a formControl in angular readonly

I know i can do it in html like

Answer 1

Programmatically enable / disable formcontrol

disable() {
   this.formcontrol.disable()
}

enable() {
   this.formcontrol.enable()
}

Manually set formcontrol as disabled

let formcontrol = new FormControl({ value: '', disabled: true })