public apiURL :string="http://localhost:56119";
  ValidateUser(userprofile: any)

{
 var reqHeader = new HttpHeaders({
  'Content-Type': 'application/x-www-form-urlencoded',
 });
 var userData = "username=" + userprofile.Email + "&password=" + userprofile.Password + "&grant_type=password";

 return this.httpClient.post(this.apiURL+'/token', userData, {
   headers: reqHeader
  })
  .pipe(
   map(res => res),catchError(this.errorHandler)
  );
}

errorHandler(error: Response) {
  console.log(error);
  return throwError(error);
}
public isAuthenticated():boolean{
  return this.getToken()!==null;
}

storeToken(token:string){
  localStorage.setItem('token',token);
}
getToken(){
  return localStorage.getItem('token');
}
removeToken(){
  return localStorage.removeItem('token');
}