TestPage.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Xamarin.Forms;

namespace Local
{
    public class TestPage : ContentPage
    {
        private Button _button;
        public TestPage()
        {
            this.Title = "Create an Agenda";
            StackLayout stackLayout = new StackLayout();

            _button = new Button();
            _button.Text = "Create a new Agenda";
            _button.Clicked += _button_Clicked;
            stackLayout.Children.Add(_button);

            Content = stackLayout;

            _button = new Button();
            _button.Text = "Take a picture of your handwritten agenda";
            _button.Clicked += _button_Jotter_Clicked;
            stackLayout.Children.Add(_button);

            _button = new Button();
            _button.Text = "About the Creator";
            _button.Clicked += _button_My_Clicked;
            stackLayout.Children.Add(_button);

            _button = new Button();
            _button.Text = "Image View Homepage";
            _button.Clicked += _button_Image_Clicked;
            stackLayout.Children.Add(_button);

           

        }

        

        private async void _button_Image_Clicked(object sender, EventArgs e)
        {
            await Navigation.PushAsync(new ImageView());
        }

        private async void _button_My_Clicked(object sender, EventArgs e)
        {
            await Navigation.PushAsync(new AboutTheAuthor());
        }

        private async void _button_Jotter_Clicked(object sender, EventArgs e)
        {
            await Navigation.PushAsync(new Page3());
        }

        private async void _button_Clicked(object sender, EventArgs e)
        {
            await Navigation.PushAsync(new MainPage());
        }
    }
}