WpfFriaLabbar/ViewModels/SkalViewModel.cs

using Caliburn.Micro;
using friaLabbar.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace friaLabbar.ViewModels
{
    public class SkalViewModel : PropertyChangedBase
    {
        string name;

        public string Name
        {
            get { return name; }
            set
            {
                name = value;
                NotifyOfPropertyChange(() => Name);
                NotifyOfPropertyChange(() => CanSayHello);
            }
        }

        public bool CanSayHello
        {
            get { return !string.IsNullOrWhiteSpace(Name); }
        }

        public BindableCollection<int> AFewNumbers { get; set; }

        public BindableCollection<PersonModel> AFewPeople { get; set; }

        public SkalViewModel()
        {
            RandomPersonGenerator pg = new RandomPersonGenerator();
            AFewNumbers = new BindableCollection<int>(new List<int> { 1, 3, 3, 7, 58, 48, 690 });
            AFewPeople= new BindableCollection<PersonModel>(pg.GetPeople());
        }

        public void SayHello()
        {
            MessageBox.Show(string.Format("Hello {0}!", Name)); //Don't do this in real life :)
            AFewNumbers[2] = 15981;
        }

    }
}