{"id":410814,"date":"2024-02-23T15:43:54","date_gmt":"2024-02-23T07:43:54","guid":{"rendered":"https:\/\/www.idc.net\/help\/410814\/"},"modified":"2024-02-23T15:43:54","modified_gmt":"2024-02-23T07:43:54","slug":"c-4-0%e6%96%b0%e7%89%b9%e6%80%a7dynamic%e4%bd%9c%e7%94%a8%e6%b5%85%e6%9e%90","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/410814\/","title":{"rendered":"C# 4.0\u65b0\u7279\u6027dynamic\u4f5c\u7528\u6d45\u6790"},"content":{"rendered":"<p>.com\u66fe\u7ecf\u62a5\u9053\u8fc7\u8bb2\u89e3C# 4.0\u4e2d\u7684\u52a8\u6001\u7c7b\u578b\u548c\u52a8\u6001\u7f16\u7a0b\u7684\u6587\u7ae0\uff0c\u4e5f\u66fe\u5bf9C# 4.0\u52a8\u6001\u7f16\u7a0b\u6280\u5de7\u505a\u8fc7\u4e00\u4e9b\u6f14\u793a\u3002\u4f46\u4f9d\u7136\u6709\u8bfb\u8005\u4e0d\u592a\u4e86\u89e3dynamic\u5230\u5e95\u6709\u90a3\u4e9b\u4f5c\u7528\u3002\u672c\u6587\u6458\u9009\u535a\u4e3b\u201c\u80e1\u91cc\u80e1\u6d82\u201d\u7684\u4e00\u7bc7\u6587\u7ae0\uff0c\u9488\u5bf9\u4f5c\u8005\u63d0\u51fa\u7684\u4e24\u4e2a\u95ee\u9898\u5bf9dynamic\u8fdb\u884c\u7406\u89e3\u3002<\/p>\n<p>\u25c6\u5199\u7a0b\u5e8f\u65f6\u5c11\u4e86\u667a\u80fd\u611f\u77e5<\/p>\n<p>\u25c6\u8fd0\u884c\u7a0b\u5e8f\u65f6\u901f\u5ea6\u53d8\u6162(\u53cd\u5c04) <\/p>\n<p>\u770b\u5b8cNew features in CSharp 4.docx\u624d\u604d\u7136\u660e\u767d\uff0c\u8d81\u7740\u6ca1\u4e8b\uff0c\u628a\u4e1c\u897f\u6574\u7406\u4e00\u4e0b\uff0c\u5e0c\u671b\u80fd\u5bf9\u6682\u65f6\u8fd8\u4e0d\u660e\u767ddynamic\u6709\u4ec0\u4e48\u7528\u7684\u670b\u53cb\u63d0\u4f9b\u4e00\u4e9b\u53c2\u8003\u3002\u5f53\u7136\uff0c\u7531\u4e8e\u672c\u4eba\u624d\u758f\u5b66\u6d45\uff0c\u4e0d\u4fdd\u8bc1\u6240\u6709\u7684\u89c2\u70b9\u90fd\u662f\u6b63\u786e\u7684\uff0c\u5e0c\u671b\u5927\u5bb6\u7528\u8fa9\u8bc1\u7684\u773c\u5149\u6765\u770b\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5982\u6709\u9519\u8bef\u4e4b\u5904\uff0c\u8bf7\u5927\u4f19\u6279\u8bc4\u6307\u6b63\u3002<\/p>\n<p>\u8a00\u5f52\u6b63\u4f20\uff0cdynamic\u5173\u952e\u5b57\u7528\u4e8e\u58f0\u660e\u4e00\u4e2a\u52a8\u6001\u5bf9\u8c61\uff0c\u7136\u540e\u901a\u8fc7\u8be5\u52a8\u6001\u5bf9\u8c61\u53bb\u8c03\u7528\u65b9\u6cd5\u6216\u8bfb\u5199\u5c5e\u6027\u3002<\/p>\n<p>\u5728\u4f7f\u7528C# 2.0\u62163.0\u7684\u65f6\u5019\uff0c\u5982\u679c\u4e00\u4e2a\u5bf9\u8c61\u9700\u8981\u5728\u8fd0\u884c\u65f6\u624d\u80fd\u786e\u5b9a\uff0c\u5e76\u4e14\u6ca1\u6709\u63a5\u53e3\u548c\u57fa\u7c7b\u65b9\u9762\u7684\u4fe1\u606f\uff0c\u90a3\u6211\u4eec\u4e00\u822c\u4f7f\u7528\u53cd\u5c04\u6280\u672f\u6765\u8c03\u7528\u8fd9\u4e2a\u672a\u77e5\u5bf9\u50cf\u7684\u65b9\u6cd5\u6216\u5c5e\u6027\uff0c\u800cC# 4.0\u63d0\u4f9b\u7684dynamic\u53ef\u4ee5\u5e2e\u6211\u4eec\u7b80\u5316\u8fd9\u4e9b\u5de5\u4f5c\u3002\u5047\u8bbe\u6211\u4eec\u7684\u7a0b\u5e8f\u4f1a\u5728\u8fd0\u884c\u65f6\u53d6\u5f97\u4e00\u4e2a\u4e0d\u786e\u5b9a\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u4f46\u8fd9\u4e2a\u5bf9\u8c61\u4e00\u5b9a\u4f1a\u6709\u4e2aPrint()\u65b9\u6cd5\uff0c\u6211\u4eec\u9700\u8981\u8c03\u7528\u8fd9\u4e2a\u65b9\u6cd5\u6253\u5370\u51fa\u4e00\u4e9b\u4fe1\u606f\uff0c\u90a3\u4e48\u5728C# 4.0\u4e0b\u9762\uff0c\u6211\u4eec\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u4e24\u53e5\u4ee3\u7801\u6765\u5b9e\u73b0\u8fd9\u4e2a\u9700\u6c42\u3002<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"2\" width=\"400\">\n<tbody>\n<tr>\n<td>\n<pre>dynamic unknowObj = GetDymanicObject();\r\nunknowObj.Print(); 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