XF 导航页面

using System;

using Xamarin.Forms;

using Xamarin.Forms.Xaml;

[assembly: XamlCompilation (XamlCompilationOptions.Compile)]

namespace App9

{

    public partial class App : Application

    {

        public App ()

        {

            InitializeComponent();

MainPage = new NavigationPage(new MainPage());

        }

protected override void OnStart ()

        {

            // Handle when your app starts

        }

protected override void OnSleep ()

        {

            // Handle when your app sleeps

        }

protected override void OnResume ()

        {

            // Handle when your app resumes

        }

    }

}

<?xml version="1.0" encoding="utf-8" ?>

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"

             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"

             xmlns:local="clr-namespace:App9"

             x:Class="App9.MainPage">

    <StackLayout>

    <Button Text="打开新页面" HeightRequest="100" Clicked="Button_Clicked"></Button>

    </StackLayout>

</ContentPage>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Xamarin.Forms;

namespace App9

{

    public partial class MainPage : ContentPage

    {

        public MainPage()

        {

            InitializeComponent();

        }

private void Button_Clicked(object sender, EventArgs e)

        {

            Navigation.PushAsync(new Page1());

        }

    }

}