CSharp: Bridge Pattern in donet 6

 

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/// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public abstract class Document     {         /// <summary>         ///         /// </summary>         protected readonly IFormatter _formatter;         /// <summary>         ///         /// </summary>         /// <param name="formatter"></param>         protected Document(IFormatter formatter)         {             _formatter = formatter;         }         /// <summary>         ///         /// </summary>         public abstract void Print();     }       /// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public interface IFormatter     {         /// <summary>         ///         /// </summary>         /// <param name="key"></param>         /// <param name="value"></param>         /// <returns></returns>         string Format(string key, string value);     }    /// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public class TermPaper : Document     {           /// <summary>         ///         /// </summary>         /// <param name="formatter"></param>         public TermPaper(IFormatter formatter)             : base(formatter)         {         }         /// <summary>         ///         /// </summary>         public string Class { get; set; } = string.Empty;         /// <summary>         ///         /// </summary>         public string Student { get; set; } = string.Empty;         /// <summary>         ///         /// </summary>         public string Text { get; set; } = string.Empty;         /// <summary>         ///         /// </summary>         public string References { get; set; } = string.Empty;         /// <summary>         ///         /// </summary>         public override void Print()         {             Console.WriteLine(_formatter.Format("班级", Class));             Console.WriteLine(_formatter.Format("学生", Student));             Console.WriteLine(_formatter.Format("文本", Text));             Console.WriteLine(_formatter.Format("目录", References));             Console.WriteLine();         }     }       /// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public class FAQ : Document     {           /// <summary>         ///         /// </summary>         /// <param name="formatter"></param>         public FAQ(IFormatter formatters)             : base(formatters)         {             Questions = new Dictionary<string, string>();         }           public string Title { get; set; } = string.Empty;         public Dictionary<string, string> Questions { get; set; }           public override void Print()         {             Console.WriteLine(_formatter.Format("标题", Title));               foreach (var question in Questions)             {                 Console.WriteLine(_formatter.Format("   问题", question.Key));                 Console.WriteLine(_formatter.Format("   回答", question.Value));             }               Console.WriteLine();         }     }       /// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public class Book : Document     {           /// <summary>         ///         /// </summary>         /// <param name="formatter"></param>         public Book(IFormatter formatters)             : base(formatters)         {         }         /// <summary>         ///         /// </summary>         public string Title { get; set; } = string.Empty;         /// <summary>         ///         /// </summary>         public string Author { get; set; } = string.Empty;         /// <summary>         ///         /// </summary>         public string Text { get; set; } = string.Empty;         /// <summary>         ///         /// </summary>         public override void Print()         {             Console.WriteLine(_formatter.Format("标题", Title));             Console.WriteLine(_formatter.Format("作者", Author));             Console.WriteLine(_formatter.Format("文本", Text));             Console.WriteLine();         }       /// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public class BackwardsFormatter : IFormatter     {         public string Format(string key, string value) =>             $"{key}: {new string(value.Reverse().ToArray())}";     }       /// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public class FancyFormatter : IFormatter     {         public string Format(string key, string value) =>             $"-= {key} ----- =- {value}";     }       /// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public class StandardFormatter : IFormatter     {         public string Format(string key, string value) =>             $"{key}: {value}";     }   /// <summary>     /// 桥接模式 Bridge Pattern- Structural Pattern     /// </summary>     public static class DocumentsAndFormattersExecutor     {           /// <summary>         ///         /// </summary>         public static void Execute()         {             ConsoleExtension.WriteSeparator("桥接模式 Bridge Pattern- Documents and formatters demo");               var documents = new List<Document>();             var formatter = new FancyFormatter();               var faq = new FAQ(formatter);             faq.Title = "桥接模式常见问题解答;";             faq.Questions.Add("这是什么模式?", "桥接模式.");             faq.Questions.Add("什么时候用此模式?", "当您需要将抽象与实现分离时.");               var book = new Geovin.Du.DuBridge.DocumentsAndFormatters.Documents.Book(formatter)             {                 Title = "C# 设计模式",                 Author = "佚名",                 Text = "内容是...",             };               var paper = new Geovin.Du.DuBridge.DocumentsAndFormatters.Documents.TermPaper(formatter)             {                 Class = "桥接模式 Bridge Pattern- Design Patterns",                 Student = "geovindu",                 Text = "关于设计模式的文本...",                 References = "GOF",             };               documents.Add(faq);             documents.Add(book);             documents.Add(paper);               foreach (var document in documents)             {                 document.Print();             }         }     }

　　

调用：

 

 

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1	Geovin.Du.DuBridge.DocumentsAndFormatters.DocumentsAndFormattersExecutor.Execute();

　输出：

 

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桥接模式 Bridge Pattern- Documents and formatters demo -------------------------------------------------- -= 标题 ----- =- 桥接模式常见问题解答; -=    问题 ----- =- 这是什么模式? -=    回答 ----- =- 桥接模式. -=    问题 ----- =- 什么时候用此模式? -=    回答 ----- =- 当您需要将抽象与实现分离时.   -= 标题 ----- =- C# 设计模式 -= 作者 ----- =- 佚名 -= 文本 ----- =- 内容是...   -= 班级 ----- =- 桥接模式 Bridge Pattern- Design Patterns -= 学生 ----- =- geovindu -= 文本 ----- =- 关于设计模式的文本... -= 目录 ----- =- GOF