C# 设计模式-工厂方法（Factory Method）

using System;

namespace FactoryMethod
{
/// <summary>
/// 声明工厂方法的抽象父类（类似于抽象工厂）
/// </summary>
abstract class Creator
{
public abstract Word CreateWord();
}

/// <summary>
/// 创建A单词对象的工厂A
/// </summary>
class AFactory : Creator
{
public override Word CreateWord()
{
//创建A单词对象
return new AWord();
}
}
/// <summary>
/// 创建BWord对象的工厂B
/// </summary>
class BFactory : Creator
{
public override Word CreateWord()
{
//创建B单词对象
return new BWord();
}
}

/// <summary>
/// 抽象单词类
/// </summary>
abstract class Word
{
public abstract void Write();
}

/// <summary>
/// A单词具体类
/// </summary>
class AWord : Word
{
public override void Write()
{
Console.WriteLine("我是AWord对象");
}
}
/// <summary>
/// B单词具体类
/// </summary>
class BWord:Word
{
public override void Write()
{
Console.WriteLine("我是BWord对象");
}
}
}

namespace FactoryMethod
{
class Program
{
static void Main(string[] args)
{
Word word;

Creator AFactory = new AFactory();
//创建A单词对象
word = AFactory.CreateWord();
word.Write();

Creator BFactory = new BFactory();
//创建B单词对象
word = BFactory.CreateWord();
word.Write();
}
}
}