sql-server-samples/samples/features/json/angularjs/dotnet-tour-of-heroes/wwwroot/app/hero-search.service.ts

import { Injectable } from '@angular/core';
import { Http, Response } from '@angular/http';
import { Observable } from 'rxjs';

import { Hero } from './hero';

@Injectable()
export class HeroSearchService {
  constructor(private http: Http) { }

  search(term: string): Observable<Hero[]> {
    return this.http
      .get(`app/heroes/?name=${term}`)
      .map((r: Response) => r.json() as Hero[]);
  }
}