如何从另一个组件访问[(ngModel)]？

import { Injectable } from '@angular/core';

@Injectable()
export class SharedService {
  public sharedValue: any;
}

import { Component } from '@angular/core';
import { SharedService } from 'path/to/shared.service';

@Component({
  selector: 'app-component1',
  providers: [SharedService],
  template: `
    <input [(ngModel)]="sharedService.sharedValue" />
  `
})
export class Component1 {
  constructor(public sharedService: SharedService) {}
}

import { Component } from '@angular/core';
import { SharedService } from 'path/to/shared.service';

@Component({
  selector: 'app-component2',
  template: `
    <input [(ngModel)]="sharedService.sharedValue" />
  `
})
export class Component2 {
  constructor(public sharedService: SharedService) {}
}