{"id":116,"date":"2020-11-20T15:17:51","date_gmt":"2020-11-20T07:17:51","guid":{"rendered":"http:\/\/admin.lastdream.net\/?p=116"},"modified":"2020-11-20T15:17:51","modified_gmt":"2020-11-20T07:17:51","slug":"c","status":"publish","type":"post","link":"https:\/\/admin.vsingers.com\/index.php\/2020\/11\/20\/c\/","title":{"rendered":"C#\u5d4c\u5957\u7c7b\u7684\u4f7f\u7528\u65b9\u6cd5\u53ca\u7279\u6027(\u8f6c\u8f7d)"},"content":{"rendered":"\n

https:\/\/blog.csdn.net\/luqizheng\/article\/details\/1965220<\/a><\/p>\n\n\n\n

\u5d4c\u5957\u7c7b\uff08Nested Class\uff09\u662f\u5728\u7c7b\u4e2d\u5b9a\u4e49\u7684\u7c7b\u3002\u4ee5\u4e0b\u628a\u62e5\u6709\u5185\u5d4c\u7c7b\u7684\u7c7b\u79f0\u4e3a\u5916\u90e8\u7c7b\u3002\u6839\u636e\u300a\u6df1\u5165\u7406\u89e3\u5d4c\u5957\u7c7b\u548c\u5185\u90e8\u7c7b<\/a>\u300b\u5d4c\u5957\u7c7b\u5206\u4e3a\u9759\u6001\u5d4c\u5957\u7c7b\u548c\u975e\u9759\u6001\u5d4c\u5957\u7c7b\uff0c\u5176\u4e2d\u975e\u9759\u6001\u5d4c\u5957\u7c7b\u9875\u88ab\u79f0\u4e3a\u5185\u90e8\u7c7b\u3002 \u5d4c\u5957\u7c7b\u5728UML\u4e2d\u662fcomposite\u7684\u53e6\u5916\u4e00\u79cd\u4ee3\u7801\u8868\u793a\u5f62\u5f0f\uff0c\u8868\u793a\u8026\u5408\u5ea6\u66f4\u9ad8\uff0c\u5e76\u4e14\u4e0e\u5916\u90e8\u7c7b\u66f4\u52a0\u7d27\u5bc6\u3002<\/p>\n\n\n\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u4e00\u822c\u7c7b\u7684\u00a0\u8bbf\u95ee\u4fee\u9970\u7b26\u53ef\u4ee5\u5b9a\u4e49\u4e3a\u9ed8\u8ba4\u7684internal \u6216\u8005public\uff0c\u800c\u5185\u5d4c\u7c7b\u5c31\u6709\u6bd4\u8f83\u591a\u7684\u9009\u62e9\uff0c\u53ef\u4ee5\u662f\u4e3aprotected\u3001internal\u3001public\u4ee5\u53ca\u9ed8\u8ba4\u7684private\u3002<\/p>\n\n\n\n

\u5185\u5d4c\u7c7b\u4e0e\u5916\u90e8\u7c7b\u7684\u8bbf\u95ee\u9650\u5236<\/h5>\n\n\n\n

\u00a0\u00a0\u00a0\u00a0\u00a0 \u5d4c\u5957\u7c7b\u53ef\u4ee5\u8bbf\u95ee\u5916\u90e8\u7c7b\u7684\u65b9\u6cd5\u3001\u5c5e\u6027\u3001\u5b57\u6bb5\u800c\u4e0d\u7ba1\u8bbf\u95ee\u4fee\u9970\u7b26\u7684\u9650\u5236\u3002\u5982\uff1a\u00a0\u00a0\u00a0<\/p>\n\n\n\n

public\u00a0\u00a0\u00a0class\u00a0\u00a0A
\u00a0\u00a0\u00a0\u00a0{
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0\u00a0static\u00a0\u00a0\u00a0int\u00a0\u00a0_AInt;
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0\u00a0int\u00a0\u00a0_instanceInt;
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0\u00a0static\u00a0\u00a0\u00a0void\u00a0\u00a0AMethod()
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Console.WriteLine(_AInt);
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0public\u00a0\u00a0\u00a0void\u00a0\u00a0SayIt()
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0NestedA.Method(\u00a0this\u00a0);
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0\u5d4c\u5957\u7c7b\u00a0\u5b9a\u4e49\u00a0*\/\u00a0
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0\u00a0class\u00a0\u00a0NestedA
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0public\u00a0\u00a0\u00a0static\u00a0\u00a0\u00a0void\u00a0\u00a0Method(A\u00a0a)
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u9759\u6001\u6210\u5458\u00a0
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0_AInt\u00a0\u00a0=\u00a0\u00a0\u00a0100\u00a0;
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0AMethod();
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5b9e\u4f8b\u00a0\u6210\u5458\u00a0
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0a._instanceInt\u00a0\u00a0=\u00a0\u00a0\u00a010\u00a0;
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0a.SayIt();
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}
\u00a0\u00a0\u00a0\u00a0}<\/p>\n\n\n\n

      \u4f46\u662f\u5916\u90e8\u7c7b\u53ea\u80fd\u591f\u8bbf\u95ee\u4fee\u9970\u7b26\u4e3apublic\u3001internal\u5d4c\u5957\u7c7b\u7684\u5b57\u6bb5\u3001\u65b9\u6cd5\u3001\u5c5e\u6027\u3002\u793a\u4f8b\u5982\u4e0b\uff1a  public   class  A
    {
         public   static   void  AMethod()
        {
             \/\/ \u6210\u529f 
            NestedA.StaticMethod();
             \/\/ \u7f16\u8bd1\u62a5\u9519 
            NestedA._Int  =   100 ;

            NestedA ins = new  NestedA();
             \/\/ \u6210\u529f 
            ins.Method();
             \/\/ \u7f16\u8bd1\u62a5\u9519 
            ins._instanceInt  =   100 ;
        }
         \/* \u5d4c\u5957\u7c7b \u5b9a\u4e49 *\/ 
         private   class  NestedA
        {
             private   static   int  _Int;
             private   int  _instanceInt;
             public   static   void  StaticMethod() { }
             public   void  Method(){}
        }
    }<\/p>\n\n\n\n

    \u5d4c\u5957\u7c7b\u8bbf\u95ee\u5916\u90e8\u7c7b\u5b9e\u4f8b\u7684\u65b9\u6cd5\u3001\u5b57\u6bb5\u3001\u5c5e\u6027\u65f6\u5019\u3002\u4e00\u822c\u5728\u91c7\u53d6\u6784\u9020\u51fd\u6570\u8f93\u5165\u5916\u90e8\u7c7b\u3002\u5982\u4e0b\uff1a   public   class  A
        {
             private   int  _a;

             \/* \u5d4c\u5957\u7c7b \u5b9a\u4e49 *\/ 
             private   class  NestedA
            {
                 public  NestedA(A a)
                {
                    a._a  =   9 ;
                }              
            }
        }<\/p>\n\n\n\n

 \u7ee7\u627f<\/h5>\n\n\n\n

        \u7ee7\u627f\u7c7b\uff0c\u4e5f\u5c31\u662f\u7ee7\u627f\u7c7b\u5916\u90e8\u7c7b\u7684\u7c7b\uff0c\u53ea\u80fd\u4f7f\u7528\u7236\u7c7b\u4e2d\u5d4c\u5957\u7c7b\u7684public\u6216\u8005internal(\u540c\u4e00\u4e2a\u7a0b\u5e8f\u96c6\u5408)\u65b9\u6cd5\u3002\u4f46\u662f\u7ee7\u627f\u7c7b\u53ef\u4ee5\u518d\u5b9a\u4e49\u4e00\u4e2a\u5185\u5d4c\u7c7b\u5e76\u4ece\u7ee7\u627f\u7236\u7c7b\u4e2d\u5d4c\u5957\u7c7b\u3002\u5982\uff1apublic   class  A
{
             \/* \u5d4c\u5957\u7c7b \u5b9a\u4e49 *\/ 
             protected   class  Nested
            {
                 protected   virtual   void  BaseNested_Method(){}
            }
}<\/p>\n\n\n\n

  public   class  C : A
{
       \/* \u5185\u5d4c\u7c7b \u5b9a\u4e49 *\/ 
       protected   class  C_Nested:Nested
      {
                 protected   override   void  BaseNested_Method()
                {
                     \/\/ \u91cd\u5199\u90e8\u5206 
        }
       }
 }<\/p>\n\n\n\n

      \u56e0\u4e3aC\u4e2dA\u4e2d\u7ee7\u627f\uff0c\u56e0\u6b64C_Nested\u53ef\u4ee5\u7ee7\u627fNested\u7c7b\uff0c\u4ece\u800c\u83b7\u53d6\u91cd\u5199\u7236\u5d4c\u5957\u7c7b\u7684\u673a\u4f1a\u3002\u4f46\u662fNested\u5fc5\u987b\u662f\u53ef\u7ee7\u627f\u7c7b\u53ca\u53ef\u8bbf\u95ee\u7684\uff08\u975eprivate \u3001sealed\u3001static\uff09\u3002<\/p>\n\n\n\n

         \u5d4c\u5957\u7c7b\u53ef\u4ee5\u968f\u610f\u5916\u90e8\u7c7b\u7684\u4efb\u4f55\u6570\u636e\u5c5e\u6027\uff0c\u800c\u5916\u90e8\u7c7b\u8bbf\u95ee\u5d4c\u5957\u7c7b\u5c31\u53ea\u80fd\u9075\u5b88\u8bbf\u95ee\u4fee\u9970\u7b26\u3002\u4ece\u8fd9\u4e2a\u89d2\u5ea6\u770b\uff0c\u5d4c\u5957\u7c7b\u662f\u5916\u90e8\u7c7b\u7684\u8865\u5145\uff0c\u901a\u8fc7\u5d4c\u5957\u7c7b\u53ef\u4ee5\u83b7\u53d6\u66f4\u597d\u7684\u5c01\u88c5\u6027\uff0c\u589e\u52a0\u5916\u90e8\u7c7b\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u8bfb\u6027\u3002       <\/p>\n\n\n\n

      \u4ece\u7a0b\u5e8f\u7ed3\u6784\u770b\uff0c\u5d4c\u5957\u7c7b\u5728\u903b\u8f91\u4e0a\u66f4\u52a0\u63a5\u8fd1\u4f7f\u7528\u7c7b\u3002\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u8868\u793a\u7c7b\u4e0e\u7c7b\u4e4b\u95f4\u7684\u7d27\u5bc6\u7a0b\u5ea6\u3002\u4e3a\u7c7b\u7ba1\u7406\u63d0\u4f9b\u9664\u547d\u540d\u7a7a\u95f4\u5916\u7684\u53e6\u4e00\u79cd\u65b9\u6cd5\u3002<\/p>\n\n\n\n

\u61d2\u52a0\u8f7d<\/p>\n\n\n\n

        \u5d4c\u5957\u7c7b\u7684\u9759\u6001\u6784\u9020\u51fd\u6570\u4e0d\u4f1a\u968f\u7740\u5916\u90e8\u7c7b\u7684\u89e6\u53d1\u800c\u521d\u59cb\u5316\u3002\u56e0\u6b64\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u521b\u5efa\u65f6\u5019\u521d\u59cb\u5316\u65f6\u95f4\uff0c\u5f53\u9700\u8981\u4f7f\u7528\u5185\u5d4c\u7c7b\u7684\u65f6\u5019\uff0c\u5d4c\u5957\u7c7b\u624d\u5f00\u59cb\u521d\u59cb\u5316\u624d\u5f00\u59cb\u521d\u59cb\u5316\u3002public   class  Outside
{
     static  Outside()
    {
        Console.WriteLine( ” Outside Inilizlized ” );
    }
     public   void  SayIt()
    {
        Nested.Run();
    }
     private   class  Nested
    {
         static  Nested()
        {
            Console.WriteLine( ” Nested initilized ” );
        }<\/p>\n\n\n\n

         public   static   void  Run()
        {
            Console.WriteLine( ” Nested Run ” );
        }
    }
}<\/p>\n\n\n\n

\u6267\u884c\u7ed3\u679c Outside o  =   new  Outside(); \/\/ \u6253\u5370”Outside Inilizlized” 
 Console.ReadLine();
 o.SayIt(); \/\/ \u9996\u5148\u6253\u5370”Nested initilized” \u518d\u6253\u5370 “Nested Run” 
 Console.ReadLine();<\/p>\n\n\n\n

      \u4e00\u822c\u5e94\u7528\u8fd9\u4e2a\u7279\u6027\u4f1a\u5728\u4e00\u4e9bC#\u5355\u4f8b\u6a21\u5f0f\u4e2d\u627e\u5230\uff0c\u800c\u8fd9\u79cd\u6a21\u5f0f\u53ef\u4ee5\u88ab\u79f0\u4e3aFully lazy singleton\u6a21\u5f0f\u3002\u4e0b\u9762\u662f\u7b80\u5355\u7684\u6f14\u793a\u4ee3\u7801\uff08Singleton\u6a21\u5f0f\u53ef\u4ee5\u5728\u8fd9\u91cc<\/a>\u6709\u66f4\u52a0\u8be6\u7ec6\u7684\u89e3\u91ca\uff09\uff1apublic   class  Singleton
    {
         public   static  Singleton Instance
        {
             get 
            {
                 return  Nested.instance;
            }
        }
         private   class  Nested
        {
             public   readonly   static  Singleton instance = new  Singleton();
        }
}<\/p>\n\n\n\n

 \u53cd\u5c04<\/p>\n\n\n\n

      \u53cd\u5c04\u5185\u5d4c\u7c7b\u9700\u8981\u4f7f\u7528”+”\u800c\u4e0d\u662f\u6211\u4eec\u5e38\u4f7f\u7528\u7684”.” \u3002\u5982A\u7c7b\u5728Assembly\u540d\u79f0\u4e3aInsideClass\u4e2d\u3002namespace  InsideClass
{
     public   class  A
    {
          public   class  Nested
        {
             protected   void  BaseNested_Method()
            {
            }
        }
     }
}<\/p>\n\n\n\n

\u6267\u884c  \/\/ \u6210\u529f 
object  o1  =  System.Activator.CreateInstance( ” InsideClass ” ,  ” InsideClass.A+Nested ” );
  \/\/ \u5931\u8d25 \u629b\u51faSystem.TypeLoadException \u5f02\u5e38 
object  o2  =  System.Activator.CreateInstance( ” InsideClass ” ,  ” InsideClass.A.Nested ” );<\/p>\n","protected":false},"excerpt":{"rendered":"

https:\/\/blog.csdn.net\/luqizheng\/article\/details\/1965220 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-116","post","type-post","status-publish","format-standard","hentry","category-c_net"],"_links":{"self":[{"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/posts\/116","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/comments?post=116"}],"version-history":[{"count":0,"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/posts\/116\/revisions"}],"wp:attachment":[{"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/media?parent=116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/categories?post=116"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/admin.vsingers.com\/index.php\/wp-json\/wp\/v2\/tags?post=116"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}