NG2- Post data as Form Data - Payload method

NG2- Post data as Form Data control method 
NG2- Post data as Payload format 
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myform.compoent.ts
===================
import { Component } from '@angular/core'
import { FormControl, NgForm, Validator, Validators } from '@angular/forms';
import { PasswordResetService } from './PasswordResetService.service'

@component({
selector: 'password-reset-form',
styles: [require('./Style.css')],
template: require('./myform.template.html')

})

export class PasswordResetComponent{

oldPasswordCtrl = new FormControl();
construtor(service: PasswordResetService){

}
PostFormData(){
let postData = { postDataKey : oldPasswordCtrl }  // Make JSON format for form-data

this.service.postFormData(postData).subscribe ( (data => any) {
if(data.status){ 'true' } else { 'false '}
}
}
PostPayLoad(){
let postData = `postDataKey=oldPasswordCtrl`  // Make string format for payload
//`key1=value1&key2=value2`

this.service.postPayload(postData).subscribe ( (data => any) {
if(data.status){ 'true' } else { 'false '}
}
}

}

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

@Injectable()
export class PasswordResetService {
  constructor(private http: Http) {
  }
  PostUrl = 'http://mydomain/postAPI';
  
  postFormData(data){
return this.http.post(PostUrl, data).map( response => response.json())
  }
  postPayload(data){
  return this.http.post(PostUrl, data).map( response => response.json())
  }
  

tempalte.html
---------------
<input  [formControl]="oldPasswordCtrl" >