CSharp: Abstract Factory Pattern in donet 6

 

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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;   namespace Geovinu.Du.DuAbstractFactory.Meals.Common {       /// <summary>     ///抽象工厂 模式 Abstract Factory Pattern     /// </summary>     public interface IMeal     {         /// <summary>         ///         /// </summary>         void ShowAmountOfCalories();         /// <summary>         ///         /// </summary>         void ShowDescription();     } }       /// <summary>     ///宫爆鸡丁 Kung Pao Chicken     /// </summary>     public class KungPao : IMeal     {           /// <summary>         /// 热量         /// </summary>         public void ShowAmountOfCalories()         {             Console.WriteLine("热量: 899 卡");         }         /// <summary>         ///         /// </summary>         public void ShowDescription()         {             Console.WriteLine("宫爆鸡丁: 鲜鸡肉，酒，味精，盐，蒜，桂皮，八角等");         }     }       /// <summary>     /// 面条     /// </summary>     public class Noodles : IMeal     {           /// <summary>         /// 热量 显示卡路里         /// </summary>         public void ShowAmountOfCalories()         {             Console.WriteLine("热量: 880 卡");         }         /// <summary>         ///         /// </summary>         public void ShowDescription()         {             Console.WriteLine("面条: 面，葱姜，老骨汤等.");         }     }         /// <summary>     ///     /// </summary>     public class NullMeal : IMeal     {         /// <summary>         ///         /// </summary>         public void ShowAmountOfCalories()         {         }         /// <summary>         ///         /// </summary>         public void ShowDescription()         {         }     }   using Geovin.Du.DuAbstractFactory.Meals; using System; using System.Collections.Generic; using System.Linq; using System.Reflection; using System.Text; using System.Threading.Tasks; using Geovinu.Du.DuAbstractFactory.Meals.Common;       namespace Geovin.Du.DuAbstractFactory.Factories {       /// <summary>     ///     /// </summary>     public class MealFactory     {         /// <summary>         ///         /// </summary>         private Dictionary<string, Type> _meals;         /// <summary>         ///         /// </summary>         public MealFactory()         {             LoadAvailableMealTypes();         }         /// <summary>         ///         /// </summary>         /// <param name="mealName"></param>         /// <returns></returns>         public IMeal CreateMeal(string mealName)         {             var type = GetTypeForCreation(mealName);             if (type == null)             {                 return new NullMeal();             }               return Activator.CreateInstance(type) as IMeal;         }         /// <summary>         ///         /// </summary>         /// <param name="check"></param>         /// <returns></returns>         public IMeal CreateMealInt(string check)         {             string mealName = check=="1"? "kungpao" : "noodles";             //if (check == "0")             //    mealName = "KungPao";             //if (check == "1")             //    mealName = "KungPao";             //if (check == "2")             //    mealName = "Noodles";             var type = GetTypeForCreation(mealName);             if (type == null)             {                 return new NullMeal();             }               return Activator.CreateInstance(type) as IMeal;         }         /// <summary>         ///         /// </summary>         /// <param name="mealName"></param>         /// <returns></returns>         private Type GetTypeForCreation(string mealName)         {             if (!_meals.TryGetValue(mealName, out Type type))             {                 return null;             }               return type;         }           /// <summary>         ///         /// </summary>         private void LoadAvailableMealTypes()         {             _meals = new Dictionary<string, Type>();               Type[] assemblyTypes = Assembly.GetExecutingAssembly().GetTypes();               foreach (Type type in assemblyTypes)             {                 if (type.GetInterface(typeof(IMeal).ToString()) != null)                 {                     _meals.Add(type.Name.ToLower(), type);                 }             }         }     } }       /// <summary>     ///     /// </summary>     public class Executor : PatternExecutor     {           /// <summary>         ///         /// </summary>         public override string Name => "/抽象工厂 模式 Abstract Factory Pattern (Simple Factory) - Creational Pattern";           /// <summary>         ///         /// </summary>         public override void Execute()         {             Console.WriteLine("请你输入要点的餐数字编号 (1.KungPao,2.Noodles): ");             string mealName = Console.ReadLine();              MealFactory factory = new MealFactory();             IMeal meal = factory.CreateMealInt(mealName);              //IMeal meal = factory.CreateMeal(mealName);             meal.ShowDescription();             meal.ShowAmountOfCalories();         }     }

　　

调用：

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1 2	Geovin.Du.DuAbstractFactory.Executor duex = new Geovin.Du.DuAbstractFactory.Executor(); duex.Execute();

　　

输出：

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请你输入要点的餐数字编号 (1.KungPao,2.Noodles): 1 宫爆鸡丁: 鲜鸡肉，酒，味精，盐，蒜，桂皮，八角等 热量: 899 卡