Xamarin.Forms Making Navigation object available in viewmodel

	using App5.ViewModels;
	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using Xamarin.Forms;
	using Xamarin.Forms.Xaml;
	namespace San.Ash.Mobile.Vic.School.Views
	{
	[XamlCompilation(XamlCompilationOptions.Compile)]
	public partial class SchoolFilterSortListView : ContentPage
	{
	public SchoolFilterSortListView()
	{
	InitializeComponent();
	BindingContext = new SchoolViewModel(Navigation);
	}
	}
	}

view raw SchoolView.cstml hosted with ❤ by GitHub

	using System;
	using System.Collections.Generic;
	using System.Collections.ObjectModel;
	using System.ComponentModel;
	using System.Linq;
	using System.Runtime.CompilerServices;
	using System.Text;
	using System.Windows.Input;
	using App5.Models;
	using App5.Views;
	using San.Ash.Mobile.Vic.School.Models;
	using Xamarin.Forms;
	using System.ComponentModel;
	namespace App5.ViewModels
	{
	public class SchoolViewModel : INotifyPropertyChanged
	{
	readonly IList<School> source;
	School selectedSchool;
	int selectionCount = 1;
	public ObservableCollection<School> Schools { get; private set; }
	public IList<School> EmptySchools { get; private set; }
	public string SelectedSchoolMessage { get; private set; }
	public ICommand FilterCommand => new Command<string>(FilterItems);
	public ICommand SchoolSelectionChangedCommand => new Command(SchoolSelectionChanged);
	public INavigation Navigation { get; set; }
	async void SchoolSelectionChanged()
	{
	//SelectedSchoolMessage = $"Selection {selectionCount}: {SelectedSchool.Name}";
	//OnPropertyChanged("SelectedSchoolMessage");
	//selectionCount++;
	//var item = args.SelectedItem as Item;
	//if (item == null)
	// return;
	var item = new Item();
	item.Id = selectionCount.ToString();
	item.Text = SelectedSchool.Name;
	await Navigation.PushAsync(new ItemDetailPage(new ItemDetailViewModel(item)));
	// Manually deselect item.
	//ItemsListView.SelectedItem = null;
	}
	#region INotifyPropertyChanged
	public event PropertyChangedEventHandler PropertyChanged;
	void OnPropertyChanged([CallerMemberName] string propertyName = null)
	{
	PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
	}
	#endregion
	}
	}

view raw SchoolViewModel.cs hosted with ❤ by GitHub