How to Show menu Button instead of back aero button on particular page?

Here this is showing back button , This is my ts file and html file

register.html

<ion-header>
 <ion-navbar>
     <button menuToggle *ngIf="!selectedItem">
       <ion-icon name="menu"></ion-icon>
     </button>
     <ion-title>Task Details</ion-title>
   </ion-navbar>
 </ion-header>


 <ion-content>
 <div *ngIf="selectedItem" class="selection">
     <b>{{selectedItem.title}}</b>
     <ion-icon name="{{selectedItem.icon}}"></ion-icon>
     
     <ion-item green text-wrap>
        <b>{{selectedItem.note}}</b>
     </ion-item>
   </div>
 </ion-content>

register.ts

import {Component} from '@angular/core';
import {NavController, NavParams,MenuController} from 'ionic-angular';


@Component({
  templateUrl: 'build/pages/item-details/item-details.html'
})
export class ItemDetailsPage {
  selectedItem: any;

  constructor(public menu:MenuController,navCtrl: NavController, navParams: NavParams) {
    // If we navigated to this page, we will have an item available as a nav param
    this.selectedItem = navParams.get('item');
 this.menu.enable(true, 'mymenu');

  }
}

I Have Solved this issue i have removed `

<ion-navebar> </ion-navebar>

On the particular page Its working …

Happy Coding :heart_eyes: