{"id":405389,"date":"2024-02-21T10:42:23","date_gmt":"2024-02-21T02:42:23","guid":{"rendered":"https:\/\/www.idc.net\/help\/405389\/"},"modified":"2024-02-21T10:42:23","modified_gmt":"2024-02-21T02:42:23","slug":"c%e4%ba%8b%e4%bb%b6%e5%92%8c%e5%a7%94%e6%89%98%e7%9a%84%e7%bc%96%e8%af%91%e4%bb%a3%e7%a0%81","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/405389\/","title":{"rendered":"C#\u4e8b\u4ef6\u548c\u59d4\u6258\u7684\u7f16\u8bd1\u4ee3\u7801"},"content":{"rendered":"

C#\u4e8b\u4ef6\u548c\u59d4\u6258\u7684\u7f16\u8bd1\u9700\u6c42<\/strong><\/p>\n

\u64cd\u4f5cC#\u4e8b\u4ef6\u65f6\uff0c\u6709\u65f6\u4f1a\u5f97\u5230\u7f16\u8bd1\u9519\u8bef\uff1a\u4e8b\u4ef6\u201cDelegate.GreetingManager.MakeGreet\u201d\u53ea\u80fd\u51fa\u73b0\u5728 += \u6216 -= \u7684\u5de6\u8fb9(\u4ece\u7c7b\u578b\u201cDelegate.GreetingManager\u201d\u4e2d\u4f7f\u7528\u65f6\u9664\u5916)\u3002<\/p>\n

\u8fd9\u65f6\u5019\uff0c\u6211\u4eec\u6ce8\u91ca\u6389\u7f16\u8bd1\u9519\u8bef\u7684\u884c\uff0c\u7136\u540e\u91cd\u65b0\u8fdb\u884c\u7f16\u8bd1\uff0c\u518d\u501f\u52a9Reflactor\u6765\u5bf9event\u7684\u58f0\u660e\u8bed\u53e5\u505a\u4e00\u63a2\u7a76\uff0c\u770b\u770b\u4e3a\u4ec0\u4e48\u4f1a\u53d1\u751f\u8fd9\u6837\u7684\u9519\u8bef\uff1a<\/p>\n

\n \n \n \n 
    \n  \n  \n  \n  
  1. public event GreetingDelegate MakeGreet; <\/span><\/span><\/span><\/span><\/span><\/li>\n \n \n \n <\/ol><\/pre>\n
     <\/p>\n
    \u53ef\u4ee5\u770b\u5230\uff0c\u5b9e\u9645\u4e0a\u5c3d\u7ba1\u6211\u4eec\u5728GreetingManager\u91cc\u5c06 MakeGreet \u58f0\u660e\u4e3apublic\uff0c\u4f46\u662f\uff0c\u5b9e\u9645\u4e0aMakeGreet\u4f1a\u88ab\u7f16\u8bd1\u6210\u79c1\u6709\u5b57\u6bb5\uff0c\u96be\u602a\u4f1a\u53d1\u751f\u4e0a\u9762\u7684\u7f16\u8bd1\u9519\u8bef\u4e86\uff0c\u56e0\u4e3a\u5b83\u6839\u672c\u5c31\u4e0d\u5141\u8bb8\u5728GreetingManager\u7c7b\u7684\u5916\u9762\u4ee5\u8d4b\u503c\u7684\u65b9\u5f0f\u8bbf\u95ee\uff0c\u4ece\u800c\u9a8c\u8bc1\u4e86\u6211\u4eec\u4e0a\u9762\u6240\u505a\u7684\u63a8\u8bba\u3002<\/p>\n
    C#\u4e8b\u4ef6\u548c\u59d4\u6258\u7684\u7f16\u8bd1\u4ee3\u7801<\/strong><\/p>\n
    \u6211\u4eec\u518d\u8fdb\u4e00\u6b65\u770b\u4e0bMakeGreet\u6240\u4ea7\u751f\u7684\u4ee3\u7801\uff1a<\/p>\n
    \n \n \n \n 
      \n  \n  \n  \n  
    1. private GreetingDelegate MakeGreet; \/\/\u5bf9\u4e8b\u4ef6\u7684\u58f0\u660e \u5b9e\u9645\u662f \u58f0\u660e\u4e00\u4e2a\u79c1\u6709\u7684\u59d4\u6258\u53d8\u91cf  <\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
    2.    <\/span><\/li>\n  \n  \n  \n  
    3. [MethodImpl(MethodImplOptions.Synchronized)]  <\/span><\/li>\n  \n  \n  \n  
    4. public void add_MakeGreet(GreetingDelegate value){  <\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
    5.     this.MakeGreet = (GreetingDelegate) Delegate.Combine(this.MakeGreet, value);  <\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
    6. }  <\/span><\/li>\n  \n  \n  \n  
    7.  <\/span><\/li>\n  \n  \n  \n  
    8. [MethodImpl(MethodImplOptions.Synchronized)]  <\/span><\/li>\n  \n  \n  \n  
    9. public void remove_MakeGreet(GreetingDelegate value){  <\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
    10.     this.MakeGreet = (GreetingDelegate) Delegate.Remove(this.MakeGreet, value);  <\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
    11. } <\/span><\/li>\n \n \n \n <\/ol><\/pre>\n
      \u73b0\u5728\u5df2\u7ecf\u5f88\u660e\u786e\u4e86\uff1aMakeGreet\u4e8b\u4ef6\u786e\u5b9e\u662f\u4e00\u4e2aGreetingDelegate\u7c7b\u578b\u7684\u59d4\u6258\uff0c\u53ea\u4e0d\u8fc7\u4e0d\u7ba1\u662f\u4e0d\u662f\u58f0\u660e\u4e3apublic\uff0c\u5b83\u603b\u662f\u88ab\u58f0\u660e\u4e3aprivate\u3002\u53e6\u5916\uff0c\u5b83\u8fd8\u6709\u4e24\u4e2a\u65b9\u6cd5\uff0c\u5206\u522b\u662fadd_MakeGreet\u548cremove_MakeGreet\uff0c\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u5206\u522b\u7528\u4e8e\u6ce8\u518c\u59d4\u6258\u7c7b\u578b\u7684\u65b9\u6cd5\u548c\u53d6\u6d88\u6ce8\u518c\u3002\u5b9e\u9645\u4e0a\u4e5f\u5c31\u662f\uff1a \u201c+= \u201d\u5bf9\u5e94 add_MakeGreet\uff0c\u201c-=\u201d\u5bf9\u5e94remove_MakeGreet\u3002\u800c\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u7684\u8bbf\u95ee\u9650\u5236\u53d6\u51b3\u4e8e\u58f0\u660e\u4e8b\u4ef6\u65f6\u7684\u8bbf\u95ee\u9650\u5236\u7b26\u3002<\/p>\n
      \u5728add_MakeGreet()\u65b9\u6cd5\u5185\u90e8\uff0c\u5b9e\u9645\u4e0a\u8c03\u7528\u4e86System.Delegate\u7684Combine()\u9759\u6001\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u7528\u4e8e\u5c06\u5f53\u524d\u7684\u53d8\u91cf\u6dfb\u52a0\u5230\u59d4\u6258\u94fe\u8868\u4e2d\u3002\u6211\u4eec\u524d\u9762\u63d0\u5230\u8fc7\u4e24\u6b21\uff0c\u8bf4\u59d4\u6258\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u7c7b\uff0c\u5728\u6211\u4eec\u5b9a\u4e49\u59d4\u6258\u7684\u65f6\u5019\uff1a<\/p>\n
      \n \n \n \n 
        \n  \n  \n  \n  
      1. public delegate void GreetingDelegate(string name); <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n \n \n \n <\/ol><\/pre>\n
        \u5f53\u7f16\u8bd1\u5668\u9047\u5230\u8fd9\u6bb5\u4ee3\u7801\u7684\u65f6\u5019\uff0c\u4f1a\u751f\u6210\u4e0b\u9762\u8fd9\u6837\u4e00\u4e2a\u5b8c\u6574\u7684\u7c7b\uff1a<\/p>\n
        \n \n \n \n 
          \n  \n  \n  \n  
        1. public sealed class GreetingDelegate:System.MulticastDelegate{  <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
        2.     public GreetingDelegate(object @object, IntPtr method);  <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
        3.     public virtual IAsyncResult BeginInvoke(string name, AsyncCallback callback, object @object);  <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
        4.     public virtual void EndInvoke(IAsyncResult result);  <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
        5.     public virtual void Invoke(string name);  <\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n  \n  \n  \n  
        6. } <\/span><\/li>\n \n \n \n <\/ol><\/pre>\n
          \u5173\u4e8e\u8fd9\u4e2a\u7c7b\u7684\u66f4\u6df1\u5165\u5185\u5bb9\uff0c\u53ef\u4ee5\u53c2\u9605\u300aCLR Via C#\u300b\u7b49\u76f8\u5173\u4e66\u7c4d\uff0c\u8fd9\u91cc\u5c31\u4e0d\u518d\u8ba8\u8bba\u4e86\u3002<\/p>\n
          \u8fd9\u6837\uff0cC#\u4e8b\u4ef6\u548c\u59d4\u6258\u7684\u7f16\u8bd1\u4ee3\u7801\u5c31\u8bb2\u5b8c\u4e86\u3002 <\/p>\n
          \u3010\u7f16\u8f91\u63a8\u8350\u3011<\/p>\n
            \n
          1. C#\u8c03\u7528SQL\u5b58\u50a8\u8fc7\u7a0b\u793a\u4f8b\u6f14\u793a<\/li>\n
          2. C#\u4e0eSQL\u8fde\u63a5:GridView\u63a7\u4ef6\u64cd\u4f5c<\/li>\n
          3. ASP\u8c03\u7528C# DLL\u53d1\u9001\u90ae\u4ef6\u65b9\u6cd5\u5171\u4eab<\/li>\n
          4. VC6.0\u548cVS2005\uff1aC++\u548cC#\u7f16\u5199\u8c03\u7528COM\u7ec4\u4ef6<\/li>\n
          5. C#\u4e2d\u8c03\u7528dll\u5e93\uff08VC\u7f16\u5199\uff09<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
            C#\u4e8b\u4ef6\u548c\u59d4\u6258\u7684\u7f16\u8bd1\u9700\u6c42 \u64cd\u4f5cC#\u4e8b\u4ef6\u65f6\uff0c\u6709\u65f6\u4f1a\u5f97\u5230\u7f16\u8bd1\u9519\u8bef\uff1a\u4e8b\u4ef6\u201cDelegate.GreetingMana […]<\/p>\n","protected":false},"author":1,"featured_media":405390,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[],"class_list":["post-405389","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-website"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/405389","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=405389"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/405389\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media\/405390"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=405389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=405389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=405389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}