C# 自动实现属性的意想不到行为

 Listing 1: Employee.cs

using System;
namespace CompilerGeneratedProps
{
    public class Employee : Person
    {
        //Fields
        protected string Title;
    }
}

Listing 2: Person.cs

using System;
namespace CompilerGeneratedProps
{
    public class Person
    {
        //Fields
        protected string _LastName; //Declared protected for extensibility.
 
        //Properties
        public string FirstName { get; set; } //Auto-implemented property.
 
        public string LastName
        {
            get
            {
                return this._LastName;
            }
            set
            {
                this._LastName = value;
            }
        }
    }
}

Listing 3: Program.cs

using System;
using System.Reflection;
 
namespace CompilerGeneratedProps
{
  public class Program
  {
    static void Main(string[] args)
    {
      Console.WriteLine("Fields seen in an instance of Person");
      Console.WriteLine("-------------------------------------------------------");
 
      Person objPerson = new Person();
      foreach (FieldInfo fi in
        objPerson.GetType().GetFields(BindingFlags.Instance |
        BindingFlags.NonPublic | BindingFlags.Public))
      {
        Console.WriteLine(fi.Name);
      }
 
      Console.WriteLine("\n\n\n\nFields seen in an instance of Employee");
      Console.WriteLine("-------------------------------------------------------");
 
      Employee objEmployee = new Employee();
      foreach (FieldInfo fi in
        objEmployee.GetType().GetFields(BindingFlags.Instance |
        BindingFlags.NonPublic | BindingFlags.Public))
      {
        Console.WriteLine(fi.Name);
      } 
      Console.Read();
    }
  }
}