factorymethodstructural.cs

来自「使用C#程序将23个常用设计模式进行列表显示」· CS 代码 · 共 72 行

using System;
using System.Windows.Forms;
using System.Collections;

namespace DesignPattern.FactoryMethodStructural
{
    class FactoryMethodStructural : AbstractPattern
    {
        public static void Run(TextBox tbInfo)
        {
            s_tbInfo = tbInfo;
            s_tbInfo.Text = "";

            // An array of creators 
            Creator[] creators = new Creator[2]; 

            creators[0] = new ConcreteCreatorA();
            creators[1] = new ConcreteCreatorB(); 
            
            // Iterate over creators and create products 
            foreach(Creator creator in creators) 
            {
                Product product = creator.FactoryMethod(); 
                DesignPattern.FormMain.OutputInfo("Created {0}", product.GetType().Name); 
            }
            
            // Wait for user 
            //Console.Read(); 
        }
    }
    
    // "Product" 
    abstract class Product 
    {
    }
    
    // "ConcreteProductA" 
    class ConcreteProductA : Product 
    {
    }
    
    // "ConcreteProductB" 
    class ConcreteProductB : Product 
    {
    }
    
    // "Creator" 
    
    abstract class Creator 
    {
        public abstract Product FactoryMethod(); 
    }
    
    // "ConcreteCreator" 
    class ConcreteCreatorA : Creator 
    {
        public override Product FactoryMethod() 
        {
            return new ConcreteProductA(); 
        }
    } 
    
    // "ConcreteCreator" 
    class ConcreteCreatorB : Creator 
    {
        public override Product FactoryMethod() 
        {
            return new ConcreteProductB(); 
        }
    }
}