{"id":12582,"date":"2024-03-14T16:09:03","date_gmt":"2024-03-14T16:09:03","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-the-switch-statement-in-c\/"},"modified":"2025-08-05T03:39:30","modified_gmt":"2025-08-05T03:39:30","slug":"what-is-the-usage-of-the-switch-statement-in-c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-usage-of-the-switch-statement-in-c\/","title":{"rendered":"C# Switch Statement Explained"},"content":{"rendered":"<p>In C#, the switch statement is used to execute a block of code based on the value of an expression. Its basic syntax is as follows:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">switch<\/span>(expression)\r\n{\r\n    <span class=\"hljs-keyword\">case<\/span> value1:\r\n        <span class=\"hljs-comment\">\/\/ \u5f53expression\u7684\u503c\u7b49\u4e8evalue1\u65f6\u6267\u884c\u7684\u4ee3\u7801<\/span>\r\n        <span class=\"hljs-keyword\">break<\/span>;\r\n    <span class=\"hljs-keyword\">case<\/span> value2:\r\n        <span class=\"hljs-comment\">\/\/ \u5f53expression\u7684\u503c\u7b49\u4e8evalue2\u65f6\u6267\u884c\u7684\u4ee3\u7801<\/span>\r\n        <span class=\"hljs-keyword\">break<\/span>;\r\n    <span class=\"hljs-keyword\">case<\/span> value3:\r\n        <span class=\"hljs-comment\">\/\/ \u5f53expression\u7684\u503c\u7b49\u4e8evalue3\u65f6\u6267\u884c\u7684\u4ee3\u7801<\/span>\r\n        <span class=\"hljs-keyword\">break<\/span>;\r\n    <span class=\"hljs-literal\">default<\/span>:\r\n        <span class=\"hljs-comment\">\/\/ \u5f53expression\u7684\u503c\u4e0d\u5339\u914d\u4efb\u4f55case\u65f6\u6267\u884c\u7684\u4ee3\u7801<\/span>\r\n        <span class=\"hljs-keyword\">break<\/span>;\r\n}\r\n<\/code><\/pre>\n<p>When using a switch statement, the value of the expression will be compared with the values following each case. If a match is found with one of the cases, the code block following that case will be executed. If no match is found with any case, the code block following the default will be executed (if there is a default).<\/p>\n<p>Within each code block of a case, you can write any C# code. Typically, a break statement is needed at the end of each case&#8217;s code block to exit the switch statement; otherwise, the next case&#8217;s code block will continue to execute. The default keyword can be used to specify a default case to execute the corresponding code block when no values match any case.<\/p>\n<p>It&#8217;s worth noting that the expression can be any integer type (including enums and integral types) or string type.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In C#, the switch statement is used to execute a block of code based on the value of an expression. Its basic syntax is as follows: switch(expression) { case value1: \/\/ \u5f53expression\u7684\u503c\u7b49\u4e8evalue1\u65f6\u6267\u884c\u7684\u4ee3\u7801 break; case value2: \/\/ \u5f53expression\u7684\u503c\u7b49\u4e8evalue2\u65f6\u6267\u884c\u7684\u4ee3\u7801 break; case value3: \/\/ \u5f53expression\u7684\u503c\u7b49\u4e8evalue3\u65f6\u6267\u884c\u7684\u4ee3\u7801 break; default: \/\/ \u5f53expression\u7684\u503c\u4e0d\u5339\u914d\u4efb\u4f55case\u65f6\u6267\u884c\u7684\u4ee3\u7801 break; } When using a switch statement, the value [&hellip;]<\/p>\n","protected":false},"author":7,"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":[12647,381,2925,4861,4931],"class_list":["post-12582","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-c-switch","tag-c-programming","tag-code-structure","tag-conditional-logic","tag-control-flow"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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