{"id":204,"date":"2024-05-19T21:51:30","date_gmt":"2024-05-19T13:51:30","guid":{"rendered":"http:\/\/www.shifengzhi.asia\/?p=204"},"modified":"2024-06-01T16:11:40","modified_gmt":"2024-06-01T08:11:40","slug":"c%e4%b8%ad%e7%b1%bb%e7%9a%84%e7%bb%a7%e6%89%bf","status":"publish","type":"post","link":"https:\/\/boki.shifengzhi.top\/?p=204","title":{"rendered":"C#"},"content":{"rendered":"<h2>C#\u4e2d\u7c7b\u7684\u7ee7\u627f<\/h2>\n<h3>\u6210\u5458\u65b9\u6cd5<\/h3>\n<p>\u5728 C# \u7684\u7c7b\u7684\u7ee7\u627f\u5173\u7cfb\u4e2d\uff0c\u6210\u5458\u65b9\u6cd5\u662f\u53ef\u4ee5\u88ab\u7ee7\u627f\u7684\uff0c \u9664\u975e\u8be5\u65b9\u6cd5\u88ab\u6807\u8bb0\u4e3a private\u3002\u8fd9\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u4e2d\u7684\u4e00\u4e2a\u57fa\u672c\u7279\u6027\uff0c\u5141\u8bb8\u5b50\u7c7b\u7ee7\u627f\u7236\u7c7b\u7684\u884c\u4e3a\u3002C# \u7684\u7ee7\u627f\u673a\u5236\u4f7f\u5f97\u5b50\u7c7b\u53ef\u4ee5\u5229\u7528\u7236\u7c7b\u5df2\u6709\u7684\u529f\u80fd\uff0c\u5e76\u6839\u636e\u9700\u8981\u8fdb\u884c\u6269\u5c55\u6216\u4fee\u6539\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u590d\u7528\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u7ee7\u627f\u3001\u8986\u76d6\u548c\u9690\u85cf\u662f\u5b9e\u73b0\u591a\u6001\u7684\u5173\u952e\u673a\u5236\u4e4b\u4e00\u3002<\/p>\n<ul>\n<li>\u5b50\u7c7b\u53ef\u4ee5\u91cd\u5199 (override) \u7ee7\u627f\u7684 virtual \u6216 abstract \u65b9\u6cd5\uff0c\u63d0\u4f9b\u81ea\u5df1\u7684\u5b9e\u73b0\u3002<\/li>\n<li>\u5b50\u7c7b\u53ef\u4ee5\u9690\u85cf (new) \u7ee7\u627f\u7684\u65b9\u6cd5\uff0c\u63d0\u4f9b\u65b0\u7684\u5b9e\u73b0\uff0c\u4f46\u4e0d\u4f1a\u6539\u53d8\u57fa\u7c7b\u65b9\u6cd5\u7684\u884c\u4e3a\u3002<\/li>\n<\/ul>\n<p>\u62d3\u5c55\uff1a<\/p>\n<ol>\n<li>\n<p>\u516c\u6709\u65b9\u6cd5\uff08public\uff09\uff1a\u53ef\u4ee5\u88ab\u4efb\u4f55\u5730\u65b9\u8bbf\u95ee\uff0c\u5305\u62ec\u5176\u4ed6\u7c7b\u3001\u5b50\u7c7b\u53ca\u5916\u90e8\u7684\u8c03\u7528\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5728\u5b50\u7c7b\u4e2d\u662f\u53ef\u89c1\u7684\uff0c\u9664\u975e\u5b83\u4eec\u88ab\u5b50\u7c7b\u8986\u76d6\uff08override\uff09\u6216\u9690\u85cf\uff08new\uff09\u3002<\/p>\n<\/li>\n<li>\n<p>\u4fdd\u62a4\u65b9\u6cd5\uff08protected\uff09\uff1a\u53ea\u80fd\u5728\u5b9a\u4e49\u5b83\u7684\u7c7b\u5185\u90e8\u3001\u5b50\u7c7b\u4e2d\u6216\u540c\u4e00\u7a0b\u5e8f\u96c6\u7684\u5176\u4ed6\u7c7b\u4e2d\u8bbf\u95ee\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5728\u5b50\u7c7b\u4e2d\u662f\u53ef\u89c1\u7684\uff0c\u53ef\u4ee5\u88ab\u5b50\u7c7b\u76f4\u63a5\u4f7f\u7528\u6216\u8986\u76d6\u3002<\/p>\n<\/li>\n<li>\n<p>\u5185\u90e8\u65b9\u6cd5\uff08internal\uff09\uff1a\u53ea\u5728\u540c\u4e00\u7a0b\u5e8f\u96c6\u4e2d\u53ef\u89c1\u3002\u5bf9\u4e8e\u5b50\u7c7b\uff0c\u5982\u679c\u5b83\u4eec\u4f4d\u4e8e\u540c\u4e00\u7a0b\u5e8f\u96c6\u4e2d\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u88ab\u7ee7\u627f\u548c\u8bbf\u95ee\u3002<\/p>\n<\/li>\n<li>\n<p>\u53d7\u4fdd\u62a4\u7684\u5185\u90e8\u65b9\u6cd5\uff08protected internal\uff09\uff1a\u53ef\u4ee5\u88ab\u540c\u4e00\u7a0b\u5e8f\u96c6\u4e2d\u7684\u4efb\u4f55\u7c7b\u6216\u4efb\u4f55\u6d3e\u751f\u7c7b\u8bbf\u95ee\u3002\u8fd9\u610f\u5473\u7740\u8fd9\u4e9b\u65b9\u6cd5\u5bf9\u4e8e\u5b50\u7c7b\u662f\u53ef\u7ee7\u627f\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>\u79c1\u6709\u65b9\u6cd5\uff08private\uff09\uff1a\u53ea\u80fd\u5728\u5b9a\u4e49\u5b83\u7684\u7c7b\u5185\u90e8\u8bbf\u95ee\u3002\u79c1\u6709\u65b9\u6cd5\u4e0d\u4f1a\u88ab\u5b50\u7c7b\u7ee7\u627f\uff0c\u5b50\u7c7b\u4e5f\u65e0\u6cd5\u76f4\u63a5\u8bbf\u95ee\u8fd9\u4e9b\u65b9\u6cd5\u3002<\/p>\n<\/li>\n<li>\n<p>\u79c1\u6709\u4fdd\u62a4\u7684\u65b9\u6cd5\uff08private protected\uff09\uff1a\u53ef\u4ee5\u88ab\u540c\u4e00\u7a0b\u5e8f\u96c6\u4e2d\u7684\u6d3e\u751f\u7c7b\u8bbf\u95ee\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5728\u5b50\u7c7b\u4e2d\u662f\u53ef\u7ee7\u627f\u7684\uff0c\u4f46\u53ea\u9650\u4e8e\u5728\u540c\u4e00\u7a0b\u5e8f\u96c6\u4e2d\u7684\u5b50\u7c7b\u3002<\/p>\n<\/li>\n<\/ol>\n<h3>\u6790\u6784\u51fd\u6570<\/h3>\n<p>\u5728 C# \u4e2d\uff0c\u6790\u6784\u51fd\u6570\u4e0d\u4f1a\u88ab\u7ee7\u627f\u3002\u6790\u6784\u51fd\u6570\u5b9e\u9645\u4e0a\u662f\u4e00\u4e2a\u8bed\u6cd5\u7cd6\uff0c\u4f1a\u88ab\u7f16\u8bd1\u5668\u8f6c\u6362\u6210\u540d\u4e3a Finalize() \u7684\u65b9\u6cd5\u3002Finalize() \u65b9\u6cd5\u4f1a\u5728\u5783\u573e\u56de\u6536\u5668(GC)\u56de\u6536\u5bf9\u8c61\u4e4b\u524d\u81ea\u52a8\u8c03\u7528\uff0c\u7528\u4e8e\u6e05\u7406\u975e\u6258\u7ba1\u8d44\u6e90\u3002\u5b50\u7c7b\u4e0d\u4f1a\u7ee7\u627f\u7236\u7c7b\u7684\u6790\u6784\u51fd\u6570\u3002\u6bcf\u4e2a\u7c7b\u90fd\u9700\u8981\u5b9a\u4e49\u81ea\u5df1\u7684\u6790\u6784\u51fd\u6570\u6765\u6e05\u7406\u81ea\u5df1\u7684\u975e\u6258\u7ba1\u8d44\u6e90\u3002<\/p>\n<p>\u62d3\u5c55\uff1a<br \/>\n\u975e\u6258\u7ba1\u8d44\u6e90\u6307\u7684\u662f\u4e0d\u7531 .NET \u8fd0\u884c\u65f6\u7684\u5783\u573e\u56de\u6536\u5668\uff08Garbage Collector, GC\uff09\u76f4\u63a5\u7ba1\u7406\u7684\u8d44\u6e90\u3002\u8fd9\u4e9b\u8d44\u6e90\u901a\u5e38\u662f\u64cd\u4f5c\u7cfb\u7edf\u7ea7\u7684\u8d44\u6e90\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\uff1a<\/p>\n<ol>\n<li>\n<p>\u6587\u4ef6\u53e5\u67c4\uff1a\u5f53\u4f60\u6253\u5f00\u4e00\u4e2a\u6587\u4ef6\u8fdb\u884c\u8bfb\u5199\u65f6\uff0c\u64cd\u4f5c\u7cfb\u7edf\u63d0\u4f9b\u4e00\u4e2a\u6587\u4ef6\u53e5\u67c4\u6765\u6807\u8bc6\u548c\u7ba1\u7406\u8fd9\u4e2a\u6587\u4ef6\u3002\u8fd9\u4e2a\u53e5\u67c4\u662f\u4e00\u4e2a\u6307\u5411\u6587\u4ef6\u7684\u6307\u9488\u6216\u7d22\u5f15\uff0c\u7531\u64cd\u4f5c\u7cfb\u7edf\u7ba1\u7406\uff0c\u800c\u4e0d\u662f\u5783\u573e\u56de\u6536\u5668\u3002<\/p>\n<\/li>\n<li>\n<p>\u7a97\u53e3\u53e5\u67c4\uff08Window Handles, HWND\uff09\uff1a\u5728\u57fa\u4e8e Windows \u7684\u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6bcf\u4e2a\u7a97\u53e3\u6216\u5bf9\u8bdd\u6846\u90fd\u6709\u4e00\u4e2a\u7a97\u53e3\u53e5\u67c4\uff08HWND\uff09\u3002\u8fd9\u4e9b\u53e5\u67c4\u662f\u7531 Windows \u64cd\u4f5c\u7cfb\u7edf\u7ba1\u7406\u7684\uff0c\u7528\u4e8e\u6807\u8bc6\u754c\u9762\u5143\u7d20\u3002<\/p>\n<\/li>\n<li>\n<p>\u7f51\u7edc\u8fde\u63a5\uff1a\u5982 TCP\/UDP \u5957\u63a5\u5b57\u8fde\u63a5\u3002\u8fd9\u4e9b\u8fde\u63a5\u7531\u64cd\u4f5c\u7cfb\u7edf\u901a\u8fc7\u7f51\u7edc\u63a5\u53e3\u7ba1\u7406\uff0c.NET \u63d0\u4f9b\u4e86\u5c01\u88c5\uff0c\u4f46\u5e95\u5c42\u7684\u5957\u63a5\u5b57\u662f\u975e\u6258\u7ba1\u8d44\u6e90\u3002<\/p>\n<\/li>\n<li>\n<p>\u6570\u636e\u5e93\u8fde\u63a5\uff1a\u867d\u7136 .NET \u63d0\u4f9b\u4e86\u6570\u636e\u5e93\u8fde\u63a5\u7684\u9ad8\u7ea7\u7ba1\u7406\uff0c\u6570\u636e\u5e93\u8fde\u63a5\u672c\u8eab\u7ecf\u5e38\u6d89\u53ca\u5230\u5e95\u5c42\u7684\u5957\u63a5\u5b57\u548c\u5176\u4ed6\u534f\u8bae\u7ec6\u8282\uff0c\u8fd9\u4e9b\u90fd\u662f\u975e\u6258\u7ba1\u8d44\u6e90\u3002<\/p>\n<\/li>\n<li>\n<p>\u5185\u5b58\u6307\u9488\uff1a\u5982\u679c\u4f60\u4f7f\u7528 C# \u7684 unsafe \u5173\u952e\u5b57\u6216\u8c03\u7528\u67d0\u4e9b API\uff08\u5982 P\/Invoke \u8c03\u7528 Win32 API \u6216\u8c03\u7528 C\/C++ \u7684 DLL\uff09\uff0c\u4f60\u53ef\u80fd\u76f4\u63a5\u64cd\u4f5c\u6307\u9488\u3002\u8fd9\u4e9b\u6307\u9488\u6307\u5411\u7684\u5185\u5b58\u4e0d\u662f\u7531 .NET \u7684\u5783\u573e\u56de\u6536\u5668\u7ba1\u7406\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>\u56fe\u5f62\u8bbe\u5907\u63a5\u53e3\uff08GDI\uff09\u5bf9\u8c61\uff1a\u4f8b\u5982\uff0c\u5b57\u4f53\u3001\u4f4d\u56fe\u3001\u753b\u7b14\u3001\u753b\u5e03\u7b49\u90fd\u662f GDI \u5bf9\u8c61\u3002\u8fd9\u4e9b\u5bf9\u8c61\u7531 Windows GDI \u7cfb\u7edf\u7ba1\u7406\uff0c\u4e0d\u662f\u7531 .NET \u7684\u5783\u573e\u56de\u6536\u5668\u76f4\u63a5\u7ba1\u7406\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>COM \u5bf9\u8c61\uff1a\u7ec4\u4ef6\u5bf9\u8c61\u6a21\u578b\uff08COM\uff09\u662f Microsoft \u7684\u4e00\u4e2a\u63a5\u53e3\u6807\u51c6\uff0c\u7528\u4e8e\u5141\u8bb8\u4e0d\u540c\u7684\u7ec4\u4ef6\u548c\u5e94\u7528\u7a0b\u5e8f\u4e4b\u95f4\u8fdb\u884c\u4ea4\u4e92\u3002\u867d\u7136 .NET \u63d0\u4f9b\u4e86\u4e0e COM \u5bf9\u8c61\u4ea4\u4e92\u7684\u80fd\u529b\uff08\u4f8b\u5982\u901a\u8fc7 RCW\uff0cRuntime Callable Wrapper\uff09\uff0c\u4f46\u8fd9\u4e9b COM \u5bf9\u8c61\u672c\u8eab\u662f\u975e\u6258\u7ba1\u7684\u3002<\/p>\n<\/li>\n<\/ol>\n<h3>\u6784\u9020\u65b9\u6cd5<\/h3>\n<p>\u5728 C# 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\/>\n\u5728\u6784\u9020\u4e00\u4e2a\u6d3e\u751f\u7c7b\u7684\u5bf9\u8c61\u65f6\uff0c\u6784\u9020\u65b9\u6cd5\u7684\u8c03\u7528\u987a\u5e8f\u662f\u4ece\u57fa\u7c7b\u5230\u6d3e\u751f\u7c7b\u3002\u5148\u8c03\u7528\u57fa\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\uff0c\u7136\u540e\u662f\u6d3e\u751f\u7c7b\u7684\u6784\u9020\u65b9\u6cd5\u3002<\/p>\n<h3>\u6210\u5458\u5b57\u6bb5<\/h3>\n<p>\u5728 C# \u4e2d\uff0c\u6210\u5458\u5b57\u6bb5\u53ef\u4ee5\u88ab\u7ee7\u627f\uff0c\u9664\u975e\u5b83\u4eec\u88ab\u58f0\u660e\u4e3a 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