C#虚方法的重写

using System;

namespace VirtualOverrideTest
{
public class FatherClass
{
public string Name
{
get { return Name; }
set { Name = value; }
}
public FatherClass(string name)
{
this.WriteName(name);
}
public virtual void WriteName(string name)
{
this.Name = name + "Father";
}
}
public class SonClass: FatherClass
{
public string Name = null;

public SonClass(string name): base(name)
{
}
public override void WriteName(string name)
{
this.Name += name + "son";
}
}
class Program
{
static void Main(string[] args)
{
SonClass son = new SonClass("sonClass: ");
Console.WriteLine(son.Name);
}
}
}