YOUserbase/User.cs

using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace YOUserbase {
	public class User : INotifyPropertyChanged {
		int id;
		string firstname;
		string lastname;
		DateTime birthDate;
		string details;
		Group workingGroup;
		bool isFullTime;
		bool isExternal;
		bool isRemote;
		int nbProjects;
		public int Id { get  => id; set => ChangeValue(ref id, value); }
		public string Firstname { get => firstname; set => ChangeValue(ref firstname, value); }
		public string Lastname { get => lastname; set => ChangeValue(ref lastname, value); }
		public DateTime BirthDate { get => birthDate; set => ChangeValue(ref birthDate, value); }
		public string Details { get => details; set => ChangeValue(ref details, value); }
		public Group WorkingGroup { get => workingGroup; set => ChangeValue(ref workingGroup, value); }
		public bool IsFullTime { get => isFullTime; set => ChangeValue(ref isFullTime, value); }
		public bool IsExternal { get => isExternal; set => ChangeValue(ref isExternal, value); }
		public bool IsRemote { get => isRemote; set => ChangeValue(ref isRemote, value); }
		public int NbProjects { get => nbProjects; set => ChangeValue(ref nbProjects, value); }

		private static int index = 0;

		public User() { 
			Id = ++index;
        }

		public User(int id) { 
			Id = id;
        }

		// Change value so setter looks a bit nicer :)
		private void ChangeValue<T>(ref T field, T value, [CallerMemberName] string propertyName = "") { 
			if (!value.Equals(field)) {
				field = value;
				NotifyPropertyChanged(propertyName);
            }
        }

		// This method is called by the Set accessor of each property.
		// The CallerMemberName attribute that is applied to the optional propertyName
		// parameter causes the property name of the caller to be substituted as an argument.
		private void NotifyPropertyChanged ([CallerMemberName] string propertyName = "")
		{
			Console.WriteLine(propertyName);
			if (PropertyChanged != null) { PropertyChanged (this, new PropertyChangedEventArgs (propertyName)); }
		}

		public event PropertyChangedEventHandler PropertyChanged;
	}
}