{"id":53627,"date":"2023-09-17T22:18:43","date_gmt":"2023-09-17T14:18:43","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=53627"},"modified":"2023-09-17T22:18:45","modified_gmt":"2023-09-17T14:18:45","slug":"c-%e4%b8%ad%e7%9a%84%e8%a6%86%e7%9b%96%e5%92%8c%e9%9a%90%e8%97%8f%e6%9c%89%e4%bb%80%e4%b9%88%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/53627.html","title":{"rendered":"C# \u4e2d\u7684\u8986\u76d6\u548c\u9690\u85cf\u6709\u4ec0\u4e48\u533a\u522b"},"content":{"rendered":"\n
\n

\u5728C#\u4e2d\uff0c\u7c7b\u7684\u7ee7\u627f\u548c\u591a\u6001\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u7684\u6838\u5fc3\u6982\u5ff5\u3002\u4e0e\u6b64\u76f8\u5173\uff0c\u8986\u76d6\uff08override\uff09\u548c\u9690\u85cf\uff08hide\uff09\u662f\u4e24\u79cd\u91cd\u8981\u7684\u65b9\u6cd5\u5904\u7406\u65b9\u5f0f\u3002\u5b83\u4eec\u4e3b\u8981\u7684\u533a\u522b\u5305\u62ec\uff1a1.\u5173\u952e\u8bcd\u4e0d\u540c\uff1b2.\u7ee7\u627f\u94fe\u4e0a\u7684\u5f71\u54cd\u4e0d\u540c\uff1b3.\u8c03\u7528\u7684\u884c\u4e3a\u4e0d\u540c\uff1b4.\u591a\u6001\u6027\u7684\u5b9e\u73b0\u4e0d\u540c\u3002\u4e86\u89e3\u8fd9\u4e9b\u533a\u522b\u5bf9\u4e8e\u9ad8\u6548\u5730\u4f7f\u7528C#\u7f16\u7a0b\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<\/blockquote>\n\n\n

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\"\"<\/figure><\/div>\n\n\n

1\u3001\u5173\u952e\u8bcd\u4e0d\u540c<\/h2>\n\n\n\n

\u8986\u76d6\u4f7f\u7528\u5173\u952e\u8bcdoverride<\/code>\uff0c\u800c\u9690\u85cf\u4f7f\u7528new<\/code>\u3002\u8986\u76d6\u8981\u6c42\u57fa\u7c7b\u65b9\u6cd5\u4f7f\u7528virtual<\/code>\u5173\u952e\u8bcd\uff0c\u800c\u6d3e\u751f\u7c7b\u4f7f\u7528override<\/code>\u5173\u952e\u8bcd\uff1b\u9690\u85cf\u5219\u4e0d\u9700\u8981\u8fd9\u6837\u7684\u8981\u6c42\uff0c\u53ea\u9700\u5728\u6d3e\u751f\u7c7b\u4e2d\u4f7f\u7528new<\/code>\u5173\u952e\u8bcd\u5373\u53ef\u3002<\/p>\n\n\n\n

2\u3001\u7ee7\u627f\u94fe\u4e0a\u7684\u5f71\u54cd\u4e0d\u540c<\/h2>\n\n\n\n

\u8986\u76d6\u4f1a\u5728\u6574\u4e2a\u7ee7\u627f\u94fe\u4e0a\u66ff\u6362\u57fa\u7c7b\u7684\u65b9\u6cd5\u5b9e\u73b0\u3002\u800c\u9690\u85cf\u4ec5\u4ec5\u9690\u85cf\u57fa\u7c7b\u4e2d\u7684\u65b9\u6cd5\uff0c\u5e76\u4e0d\u5f71\u54cd\u6574\u4e2a\u7ee7\u627f\u94fe\u3002\u8fd9\u610f\u5473\u7740\uff0c\u5f53\u4f7f\u7528\u8986\u76d6\u65f6\uff0c\u65e0\u8bba\u5f15\u7528\u7684\u7c7b\u578b\u5982\u4f55\uff0c\u90fd\u4f1a\u8c03\u7528\u6d3e\u751f\u7c7b\u7684\u65b9\u6cd5\uff1b\u800c\u9690\u85cf\u5219\u4f9d\u8d56\u4e8e\u5f15\u7528\u7684\u7c7b\u578b\u3002<\/p>\n\n\n\n

3\u3001\u8c03\u7528\u7684\u884c\u4e3a\u4e0d\u540c<\/h2>\n\n\n\n

\u5f53\u4f60\u8c03\u7528\u4e00\u4e2a\u8986\u76d6\u7684\u65b9\u6cd5\u65f6\uff0cC#\u7684\u8fd0\u884c\u65f6\u4f1a\u6839\u636e\u5bf9\u8c61\u7684\u5b9e\u9645\u7c7b\u578b\u6765\u786e\u5b9a\u8981\u6267\u884c\u54ea\u4e2a\u65b9\u6cd5\u7248\u672c\uff0c\u8fd9\u79f0\u4e3a\u591a\u6001\u3002\u800c\u5bf9\u4e8e\u9690\u85cf\u7684\u65b9\u6cd5\uff0c\u8c03\u7528\u7684\u7248\u672c\u5b8c\u5168\u53d6\u51b3\u4e8e\u5f15\u7528\u7684\u7c7b\u578b\u3002<\/p>\n\n\n\n

4\u3001\u591a\u6001\u6027\u7684\u5b9e\u73b0\u4e0d\u540c<\/h2>\n\n\n\n

\u8986\u76d6\u662f\u591a\u6001\u7684\u771f\u6b63\u5b9e\u73b0\uff0c\u56e0\u4e3a\u5b83\u5141\u8bb8\u6211\u4eec\u5bf9\u4e00\u4e2a\u57fa\u7c7b\u7684\u5f15\u7528\u8c03\u7528\u4e00\u4e2a\u6d3e\u751f\u7c7b\u7684\u65b9\u6cd5\u3002\u8fd9\u589e\u52a0\u4e86\u4ee3\u7801\u7684\u53ef\u91cd\u7528\u6027\u548c\u7075\u6d3b\u6027\u3002\u800c\u9690\u85cf\u4e0d\u652f\u6301\u8fd9\u6837\u7684\u591a\u6001\u884c\u4e3a\uff0c\u56e0\u4e3a\u5b83\u57fa\u4e8e\u5f15\u7528\u7c7b\u578b\uff0c\u800c\u4e0d\u662f\u5b9e\u9645\u7684\u5bf9\u8c61\u7c7b\u578b\u3002<\/p>\n\n\n\n

5\u3001\u4f7f\u7528\u573a\u666f<\/h2>\n\n\n\n

\u8986\u76d6\u901a\u5e38\u7528\u4e8e\u5e0c\u671b\u6d3e\u751f\u7c7b\u63d0\u4f9b\u4e0e\u57fa\u7c7b\u76f8\u540c\u7684\u65b9\u6cd5\u7b7e\u540d\u4f46\u5177\u6709\u4e0d\u540c\u5b9e\u73b0\u7684\u60c5\u51b5\u3002\u8fd9\u4f7f\u5f97\u57fa\u7c7b\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u9ed8\u8ba4\u7684\u884c\u4e3a\uff0c\u800c\u5141\u8bb8\u6d3e\u751f\u7c7b\u63d0\u4f9b\u5177\u4f53\u7684\u5b9e\u73b0\u3002<\/p>\n\n\n\n

\u9690\u85cf\u4e3b\u8981\u7528\u4e8e\u90a3\u4e9b\u5e0c\u671b\u5b8c\u5168\u65ad\u5f00\u4e0e\u57fa\u7c7b\u65b9\u6cd5\u7684\u5173\u8054\u7684\u573a\u666f\u3002\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b9\u5f0f\u6765\u786e\u4fdd\u6d3e\u751f\u7c7b\u7684\u65b9\u6cd5\u4e0d\u4f1a\u88ab\u8bef\u8ba4\u4e3a\u662f\u57fa\u7c7b\u7684\u65b9\u6cd5\u7684\u4e00\u79cd\u53d8\u4f53\u3002<\/p>\n\n\n\n

6\u3001\u8b66\u544a\u548c\u9519\u8bef<\/h2>\n\n\n\n

\u4f7f\u7528override<\/code>\u5173\u952e\u8bcd\u4f46\u6ca1\u6709\u57fa\u7c7b\u7684virtual<\/code>\u65b9\u6cd5\u65f6\uff0c\u7f16\u8bd1\u5668\u4f1a\u62a5\u9519\u3002\u800c\u5f53\u5728\u6ca1\u6709\u4f7f\u7528new<\/code>\u5173\u952e\u8bcd\u7684\u60c5\u51b5\u4e0b\u9690\u85cf\u4e00\u4e2a\u65b9\u6cd5\u65f6\uff0c\u7f16\u8bd1\u5668\u901a\u5e38\u4f1a\u53d1\u51fa\u8b66\u544a\uff0c\u56e0\u4e3a\u8fd9\u53ef\u80fd\u662f\u4e0d\u5c0f\u5fc3\u7684\u3002<\/p>\n\n\n\n

\u7ed3\u8bba\uff1a\u7406\u89e3\u8986\u76d6\u548c\u9690\u85cf\u7684\u533a\u522b\u5bf9\u4e8e\u6709\u6548\u5730\u8fdb\u884cC#\u7f16\u7a0b\u662f\u81f3\u5173\u91cd\u8981\u7684\u3002\u9009\u62e9\u4f7f\u7528\u54ea\u79cd\u65b9\u5f0f\u53d6\u51b3\u4e8e\u7279\u5b9a\u7684\u9700\u6c42\uff0c\u4f46\u4e86\u89e3\u5b83\u4eec\u7684\u5de5\u4f5c\u65b9\u5f0f\u548c\u5f71\u54cd\u5c06\u5e2e\u52a9\u5f00\u53d1\u8005\u907f\u514d\u6f5c\u5728\u7684\u9519\u8bef\u548c\u95ee\u9898\u3002<\/p>\n\n\n\n

\n\n\n\n

\u5e38\u89c1\u95ee\u7b54<\/strong>\uff1a<\/h2>\n\n\n\n
\n

Q1:<\/strong> \u5728C#\u4e2d\uff0c\u6211\u53ef\u4ee5\u5728\u4e00\u4e2a\u6d3e\u751f\u7c7b\u4e2d\u540c\u65f6\u4f7f\u7528\u9690\u85cf\u548c\u8986\u76d6\u5417\uff1f<\/p>\n\n\n\n

A1:<\/strong> \u662f\u7684\uff0c\u4f60\u53ef\u4ee5\u5728\u4e00\u4e2a\u6d3e\u751f\u7c7b\u4e2d\u540c\u65f6\u4f7f\u7528\u9690\u85cf\u548c\u8986\u76d6\uff0c\u53ea\u8981\u5b83\u4eec\u5e94\u7528\u4e8e\u4e0d\u540c\u7684\u57fa\u7c7b\u65b9\u6cd5\u3002\u8986\u76d6\u9700\u8981\u57fa\u7c7b\u65b9\u6cd5\u88ab\u6807\u8bb0\u4e3avirtual<\/code>\uff0c\u5e76\u5728\u6d3e\u751f\u7c7b\u4e2d\u4f7f\u7528override<\/code>\u5173\u952e\u8bcd\u3002\u9690\u85cf\u5219\u901a\u8fc7\u4f7f\u7528new<\/code>\u5173\u952e\u8bcd\u6765\u5b9e\u73b0\u3002\u4e0d\u8fc7\u8981\u6ce8\u610f\uff0c\u540c\u4e00\u4e2a\u65b9\u6cd5\u4e0d\u80fd\u540c\u65f6\u88abnew<\/code>\u548coverride<\/code>\u4fee\u9970\u3002<\/p>\n<\/div>\n\n\n\n

\n

Q2:<\/strong> \u5f53\u6211\u5728\u6d3e\u751f\u7c7b\u4e2d\u6ca1\u6709\u4f7f\u7528new<\/code>\u6216override<\/code>\u5173\u952e\u8bcd\u65f6\uff0c\u4f46\u6d3e\u751f\u7c7b\u65b9\u6cd5\u4e0e\u57fa\u7c7b\u65b9\u6cd5\u6709\u76f8\u540c\u7684\u7b7e\u540d\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\uff1f<\/p>\n\n\n\n

A2:<\/strong> \u5f53\u6d3e\u751f\u7c7b\u7684\u65b9\u6cd5\u4e0e\u57fa\u7c7b\u65b9\u6cd5\u5177\u6709\u76f8\u540c\u7684\u7b7e\u540d\uff0c\u4f46\u4f60\u6ca1\u6709\u660e\u786e\u4f7f\u7528new<\/code>\u6216override<\/code>\u5173\u952e\u8bcd\u65f6\uff0c\u7f16\u8bd1\u5668\u4f1a\u53d1\u51fa\u4e00\u4e2a\u8b66\u544a\uff0c\u544a\u8bc9\u4f60\u6d3e\u751f\u7c7b\u7684\u65b9\u6cd5\u9690\u85cf\u4e86\u57fa\u7c7b\u7684\u65b9\u6cd5\u3002\u5c3d\u7ba1\u4f1a\u6709\u8b66\u544a\uff0c\u4f46\u4ee3\u7801\u4ecd\u7136\u53ef\u4ee5\u7f16\u8bd1\u548c\u8fd0\u884c\u3002\u4f46\u4e3a\u4e86\u4ee3\u7801\u7684\u6e05\u6670\u6027\u548c\u907f\u514d\u6df7\u6dc6\uff0c\u5efa\u8bae\u663e\u5f0f\u5730\u4f7f\u7528new<\/code>\u5173\u952e\u8bcd\u3002<\/p>\n<\/div>\n\n\n\n

\n

Q3:<\/strong> \u5982\u679c\u57fa\u7c7b\u65b9\u6cd5\u88ab\u6807\u8bb0\u4e3asealed<\/code>\uff0c\u6211\u8fd8\u53ef\u4ee5\u5728\u6d3e\u751f\u7c7b\u4e2d\u8986\u76d6\u5b83\u5417\uff1f<\/p>\n\n\n\n

A3:<\/strong> \u4e0d\uff0c\u5982\u679c\u57fa\u7c7b\u65b9\u6cd5\u88ab\u6807\u8bb0\u4e3asealed<\/code>\uff0c\u90a3\u4e48\u8be5\u65b9\u6cd5\u5df2\u7ecf\u662f\u6700\u7ec8\u7248\u672c\uff0c\u4e0d\u80fd\u518d\u88ab\u8986\u76d6\u3002\u5c1d\u8bd5\u5728\u6d3e\u751f\u7c7b\u4e2d\u8986\u76d6\u4e00\u4e2asealed<\/code>\u65b9\u6cd5\u4f1a\u5bfc\u81f4\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n<\/div>\n\n\n\n

\n

Q4:<\/strong> \u5728C#\u4e2d\uff0c\u9690\u85cf\u548c\u8986\u76d6\u5c5e\u6027\u7684\u89c4\u5219\u4e0e\u65b9\u6cd5\u76f8\u540c\u5417\uff1f<\/p>\n\n\n\n

A4:<\/strong> \u662f\u7684\uff0c\u5c5e\u6027\u5728C#\u4e2d\u7684\u884c\u4e3a\u4e0e\u65b9\u6cd5\u7c7b\u4f3c\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528virtual<\/code>, override<\/code>, \u548cnew<\/code>\u5173\u952e\u8bcd\u6765\u5b9a\u4e49\u6216\u4fee\u6539\u6d3e\u751f\u7c7b\u4e2d\u7684\u5c5e\u6027\u884c\u4e3a\u3002\u5982\u679c\u4f60\u5e0c\u671b\u4e00\u4e2a\u5c5e\u6027\u5728\u6d3e\u751f\u7c7b\u4e2d\u53ef\u4ee5\u88ab\u8986\u76d6\uff0c\u90a3\u4e48\u5728\u57fa\u7c7b\u4e2d\u8be5\u5c5e\u6027\u5fc5\u987b\u88ab\u6807\u8bb0\u4e3avirtual<\/code>\u3002\u5982\u679c\u4f60\u60f3\u5728\u6d3e\u751f\u7c7b\u4e2d\u9690\u85cf\u57fa\u7c7b\u7684\u5c5e\u6027\uff0c\u53ef\u4ee5\u4f7f\u7528new<\/code>\u5173\u952e\u8bcd\u3002<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"\u5728C#\u4e2d\uff0c\u7c7b\u7684\u7ee7\u627f\u548c\u591a\u6001\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u7684\u6838\u5fc3\u6982\u5ff5\u3002\u4e0e\u6b64\u76f8\u5173\uff0c\u8986\u76d6\uff08override\uff09\u548c\u9690\u85cf\uff08hide\uff09\u662f\u4e24\u79cd\u91cd […]","protected":false},"author":7,"featured_media":53633,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/53627"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=53627"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/53627\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/53633"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=53627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=53627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=53627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}