{"id":3993,"date":"2024-03-13T07:47:05","date_gmt":"2024-03-13T07:47:05","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-is-the-use-of-protected-implemented-in-c\/"},"modified":"2025-07-30T23:52:09","modified_gmt":"2025-07-30T23:52:09","slug":"how-is-the-use-of-protected-implemented-in-c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-is-the-use-of-protected-implemented-in-c\/","title":{"rendered":"C# Protected Access Modifier Explained"},"content":{"rendered":"<p>In C#, &#8216;protected&#8217; is an access modifier that specifies only derived classes can access members. Protected members are visible within the same class or derived classes, but not visible in instances of the class.<\/p>\n<p>By using the protected modifier, the internal implementation details of a class can be protected while still providing extension points for derived classes. Subclasses can inherit the protected members of the parent class and use them in their own implementations.<\/p>\n<p>Here are examples of how to use the &#8220;protected&#8221; feature:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">BaseClass<\/span>\r\n{\r\n    <span class=\"hljs-keyword\">protected<\/span> <span class=\"hljs-built_in\">int<\/span> protectedField;\r\n\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">protected<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">ProtectedMethod<\/span>()<\/span>\r\n    {\r\n        Console.WriteLine(<span class=\"hljs-string\">\"This is a protected method in the base class\"<\/span>);\r\n    }\r\n}\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title\">DerivedClass<\/span> : <span class=\"hljs-title\">BaseClass<\/span>\r\n{\r\n    <span class=\"hljs-function\"><span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title\">AccessProtectedMember<\/span>()<\/span>\r\n    {\r\n        protectedField = <span class=\"hljs-number\">10<\/span>; <span class=\"hljs-comment\">\/\/ \u53ef\u4ee5\u8bbf\u95ee\u7236\u7c7b\u7684protected\u5b57\u6bb5<\/span>\r\n        ProtectedMethod(); <span class=\"hljs-comment\">\/\/ \u53ef\u4ee5\u8c03\u7528\u7236\u7c7b\u7684protected\u65b9\u6cd5<\/span>\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>In the example above, BaseClass has a protected field and a protected method. DerivedClass inherits from BaseClass, allowing it to access and use the protected members in BaseClass.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C#, &#8216;protected&#8217; is an access modifier that specifies only derived classes can access members. Protected members are visible within the same class or derived classes, but not visible in instances of the class. By using the protected modifier, the internal implementation details of a class can be protected while still providing extension points for [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[692,3068,3070,3069,3067],"class_list":["post-3993","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-access-modifiers","tag-c-inheritance","tag-c-visibility","tag-oop-c","tag-protected-c"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>C# Protected Access Modifier Explained - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how C# protected access modifier works, its usage with derived classes, and inheritance best practices.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/how-is-the-use-of-protected-implemented-in-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C# Protected Access Modifier Explained\" \/>\n<meta property=\"og:description\" content=\"Learn how C# protected access modifier works, its usage with derived classes, and inheritance best practices.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-is-the-use-of-protected-implemented-in-c\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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