Learn-WinUI-3-Second-Edition/Chapter01/WinUI.SimpleSample/WinUI3.SimpleSample/MainViewModel.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WinUI3.SimpleSample
{
    public class MainViewModel : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private string _name;
        
        public MainViewModel()
        {
            _name = "Bob Jones";
        }

        public string Name
        {
            get { return _name; }
            set
            {
                if (_name == value) return;
                _name = value;
                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(Name)));
            }
        }
    }
}