{"id":3479,"date":"2025-04-06T23:32:21","date_gmt":"2025-04-06T15:32:21","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3479"},"modified":"2025-04-06T23:32:21","modified_gmt":"2025-04-06T15:32:21","slug":"c-%e5%8f%98%e9%87%8f%ef%bc%88variables%ef%bc%89%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/04\/06\/c-%e5%8f%98%e9%87%8f%ef%bc%88variables%ef%bc%89%e8%af%a6%e8%a7%a3\/","title":{"rendered":"C# \u53d8\u91cf\uff08Variables\uff09\u8be6\u89e3"},"content":{"rendered":"\n<p>\u4e0b\u9762\u662f\u5173\u4e8e <strong>C# \u53d8\u91cf\uff08Variables\uff09<\/strong> \u7684\u5168\u9762\u4e13\u4e1a\u89e3\u8bfb\uff0c\u5305\u62ec\u53d8\u91cf\u7684\u58f0\u660e\u3001\u4f5c\u7528\u57df\u3001\u547d\u540d\u89c4\u8303\u3001\u7c7b\u578b\u63a8\u65ad\uff08<code>var<\/code>\uff09\u3001\u5e38\u91cf\uff08<code>const<\/code>\uff09\u3001\u53ea\u8bfb\u53d8\u91cf\uff08<code>readonly<\/code>\uff09\u3001\u9759\u6001\u53d8\u91cf\u7b49\u5185\u5bb9\uff0c\u5e76\u9644\u5e26\u4ee3\u7801\u793a\u4f8b\uff0c\u9002\u5408\u7cfb\u7edf\u5b66\u4e60\u4e0e\u5b9e\u9645\u5f00\u53d1\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u76ee\u5f55\u5bfc\u822a<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4ec0\u4e48\u662f\u53d8\u91cf\uff1f<\/li>\n\n\n\n<li>\u53d8\u91cf\u58f0\u660e\u4e0e\u521d\u59cb\u5316<\/li>\n\n\n\n<li>C# \u53d8\u91cf\u7c7b\u578b\u5206\u7c7b<\/li>\n\n\n\n<li>\u7c7b\u578b\u63a8\u65ad\u53d8\u91cf\uff08<code>var<\/code>\uff09<\/li>\n\n\n\n<li>\u5e38\u91cf\uff08<code>const<\/code>\uff09\u4e0e\u53ea\u8bfb\u53d8\u91cf\uff08<code>readonly<\/code>\uff09<\/li>\n\n\n\n<li>\u9759\u6001\u53d8\u91cf\uff08<code>static<\/code>\uff09<\/li>\n\n\n\n<li>\u53d8\u91cf\u4f5c\u7528\u57df\uff08Scope\uff09<\/li>\n\n\n\n<li>\u547d\u540d\u89c4\u8303\u4e0e\u5efa\u8bae<\/li>\n\n\n\n<li>\u6743\u5a01\u6587\u6863\u4e0e\u5b66\u4e60\u94fe\u63a5<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1\ufe0f\u20e3 \u4ec0\u4e48\u662f\u53d8\u91cf\uff1f<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u53d8\u91cf\u662f\u7528\u4e8e\u5b58\u50a8\u6570\u636e\u503c\u7684\u547d\u540d\u5185\u5b58\u4f4d\u7f6e\u3002\u5728 C# \u4e2d\uff0c\u6bcf\u4e2a\u53d8\u91cf\u90fd\u5fc5\u987b\u58f0\u660e\u7c7b\u578b\uff0c\u5e76\u4e14\u53ea\u80fd\u5b58\u50a8\u8be5\u7c7b\u578b\u7684\u6570\u636e\u3002<\/p>\n<\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2\ufe0f\u20e3 \u53d8\u91cf\u58f0\u660e\u4e0e\u521d\u59cb\u5316<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u270d\ufe0f \u57fa\u672c\u8bed\u6cd5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>int age;               \/\/ \u58f0\u660e\u53d8\u91cf\nage = 25;              \/\/ \u8d4b\u503c\nint score = 100;       \/\/ \u58f0\u660e\u5e76\u521d\u59cb\u5316<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83e\uddea \u793a\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>string name = \"Alice\";\ndouble pi = 3.14159;\nbool isActive = true;<\/code><\/pre>\n\n\n\n<p>\ud83d\udd17 \u6587\u6863\u53c2\u8003\uff1ahttps:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/programming-guide\/variables\/<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3\ufe0f\u20e3 C# \u53d8\u91cf\u7c7b\u578b\u5206\u7c7b<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7c7b\u578b<\/th><th>\u793a\u4f8b<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td>\u503c\u7c7b\u578b<\/td><td><code>int<\/code>, <code>bool<\/code><\/td><td>\u5b58\u50a8\u5b9e\u9645\u7684\u503c<\/td><\/tr><tr><td>\u5f15\u7528\u7c7b\u578b<\/td><td><code>string<\/code>, <code>object<\/code>, \u81ea\u5b9a\u4e49\u7c7b<\/td><td>\u5b58\u50a8\u7684\u662f\u5bf9\u8c61\u5f15\u7528<\/td><\/tr><tr><td>\u6307\u9488\u7c7b\u578b<\/td><td><code>int*<\/code>, <code>char*<\/code><\/td><td>\u4ec5\u5728\u4e0d\u5b89\u5168\u4ee3\u7801\uff08unsafe\uff09\u4e2d\u4f7f\u7528<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u503c\u7c7b\u578b\uff08Value Types\uff09\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>int<\/code>, <code>float<\/code>, <code>bool<\/code>, <code>char<\/code>, <code>struct<\/code>, <code>enum<\/code><\/li>\n<\/ul>\n\n\n\n<p><strong>\u5f15\u7528\u7c7b\u578b\uff08Reference Types\uff09\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>string<\/code>, <code>class<\/code>, <code>interface<\/code>, <code>delegate<\/code>, <code>object<\/code>, <code>array<\/code><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4\ufe0f\u20e3 \u7c7b\u578b\u63a8\u65ad\u53d8\u91cf\uff08<code>var<\/code>\uff09<\/h2>\n\n\n\n<p><code>var<\/code> \u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u63a8\u65ad\u6570\u636e\u7c7b\u578b\uff0c\u4f46<strong>\u7f16\u8bd1\u65f6\u5fc5\u987b\u80fd\u591f\u660e\u786e\u63a8\u65ad\u7c7b\u578b<\/strong>\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var message = \"Hello\";     \/\/ \u63a8\u65ad\u4e3a string\nvar number = 123;          \/\/ \u63a8\u65ad\u4e3a int<\/code><\/pre>\n\n\n\n<p>\u26d4 \u4e0d\u5141\u8bb8\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>var something; \/\/ \u274c \u62a5\u9519\uff1a\u5fc5\u987b\u521d\u59cb\u5316<\/code><\/pre>\n\n\n\n<p>\ud83d\udd17 \u6587\u6863\u53c2\u8003\uff1ahttps:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/language-reference\/keywords\/var<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5\ufe0f\u20e3 \u5e38\u91cf\uff08<code>const<\/code>\uff09\u4e0e\u53ea\u8bfb\u53d8\u91cf\uff08<code>readonly<\/code>\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd39 <code>const<\/code>\uff1a\u7f16\u8bd1\u65f6\u5e38\u91cf\uff0c\u503c\u4e0d\u53ef\u6539\u53d8<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>const double Pi = 3.14159;<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5fc5\u987b\u5728\u58f0\u660e\u65f6\u8d4b\u503c<\/li>\n\n\n\n<li>\u503c\u5728\u7f16\u8bd1\u65f6\u56fa\u5b9a<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd39 <code>readonly<\/code>\uff1a\u8fd0\u884c\u65f6\u53ea\u8bfb\u5b57\u6bb5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>readonly int id;\n\npublic MyClass(int id)\n{\n    this.id = id; \/\/ \u53ea\u80fd\u5728\u6784\u9020\u51fd\u6570\u4e2d\u8d4b\u503c\n}<\/code><\/pre>\n\n\n\n<p>\ud83d\udd17 \u6587\u6863\u53c2\u8003\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/language-reference\/keywords\/const\"><code>const<\/code><\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/language-reference\/keywords\/readonly\"><code>readonly<\/code><\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6\ufe0f\u20e3 \u9759\u6001\u53d8\u91cf\uff08<code>static<\/code>\uff09<\/h2>\n\n\n\n<p>\u9759\u6001\u53d8\u91cf\u5c5e\u4e8e\u7c7b\u672c\u8eab\u800c\u975e\u5bf9\u8c61\u5b9e\u4f8b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Counter\n{\n    public static int Count = 0;\n}<\/code><\/pre>\n\n\n\n<p>\u8c03\u7528\u65b9\u5f0f\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Counter.Count++;<\/code><\/pre>\n\n\n\n<p>\ud83d\udd17 \u6587\u6863\u53c2\u8003\uff1ahttps:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/programming-guide\/classes-and-structs\/static-classes-and-static-class-members<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7\ufe0f\u20e3 \u53d8\u91cf\u4f5c\u7528\u57df\uff08Scope\uff09<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u4f5c\u7528\u57df\u7c7b\u578b<\/th><th>\u793a\u4f8b<\/th><th>\u53ef\u8bbf\u95ee\u8303\u56f4<\/th><\/tr><\/thead><tbody><tr><td>\u5c40\u90e8\u53d8\u91cf<\/td><td>\u65b9\u6cd5\u6216\u4ee3\u7801\u5757\u4e2d\u58f0\u660e<\/td><td>\u53ea\u5728\u4ee3\u7801\u5757\u4e2d\u6709\u6548<\/td><\/tr><tr><td>\u6210\u5458\u53d8\u91cf<\/td><td>\u7c7b\u7684\u5b57\u6bb5<\/td><td>\u6574\u4e2a\u7c7b\u4e2d\u53ef\u8bbf\u95ee<\/td><\/tr><tr><td>\u53c2\u6570\u53d8\u91cf<\/td><td>\u65b9\u6cd5\u53c2\u6570<\/td><td>\u65b9\u6cd5\u5185\u90e8\u53ef\u8bbf\u95ee<\/td><\/tr><tr><td>\u9759\u6001\u53d8\u91cf<\/td><td>\u5e26 <code>static<\/code> \u7684\u5b57\u6bb5<\/td><td>\u6240\u6709\u7c7b\u5171\u4eab\uff0c\u4e0d\u4f9d\u8d56\u5bf9\u8c61<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\ud83d\udd0d \u793a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Demo\n{\n    int instanceVar = 10;           \/\/ \u6210\u5458\u53d8\u91cf\n\n    static int staticVar = 20;      \/\/ \u9759\u6001\u53d8\u91cf\n\n    void Method(int param)          \/\/ \u53c2\u6570\u53d8\u91cf\n    {\n        int localVar = 30;          \/\/ \u5c40\u90e8\u53d8\u91cf\n    }\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8\ufe0f\u20e3 \u547d\u540d\u89c4\u8303\u4e0e\u5efa\u8bae<\/h2>\n\n\n\n<p>\u2714 \u9075\u5faa <a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/standard\/design-guidelines\/naming-guidelines\">Microsoft C# \u547d\u540d\u7ea6\u5b9a<\/a><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7c7b\u578b<\/th><th>\u547d\u540d\u89c4\u8303<\/th><th>\u793a\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>\u53d8\u91cf<\/td><td>camelCase<\/td><td><code>totalScore<\/code><\/td><\/tr><tr><td>\u5e38\u91cf<\/td><td>PascalCase \u6216\u5168\u5927\u5199<\/td><td><code>MaxCount<\/code> \/ <code>MAX<\/code><\/td><\/tr><tr><td>\u5b57\u6bb5<\/td><td><code>_camelCase<\/code>\uff08\u79c1\u6709\uff09<\/td><td><code>_totalScore<\/code><\/td><\/tr><tr><td>\u9759\u6001\u5b57\u6bb5<\/td><td>PascalCase<\/td><td><code>DefaultCount<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u6743\u5a01\u6587\u6863\u4e0e\u5b66\u4e60\u94fe\u63a5<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udcd8 C# \u53d8\u91cf\u5b98\u65b9\u4ecb\u7ecd\uff1ahttps:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/programming-guide\/variables\/<\/li>\n\n\n\n<li>\ud83d\udcd8 \u6570\u636e\u7c7b\u578b\u8be6\u89e3\uff1ahttps:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/language-reference\/builtin-types\/built-in-types<\/li>\n\n\n\n<li>\ud83d\udcd8 \u547d\u540d\u89c4\u8303\uff1ahttps:\/\/learn.microsoft.com\/en-us\/dotnet\/standard\/design-guidelines\/naming-guidelines<\/li>\n\n\n\n<li>\ud83d\udcd8 <code>readonly<\/code> vs <code>const<\/code> \u6bd4\u8f83\uff1ahttps:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/programming-guide\/classes-and-structs\/readonly<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0b\u9762\u662f\u5173\u4e8e C# \u53d8\u91cf\uff08Variables\uff09 \u7684\u5168\u9762\u4e13\u4e1a\u89e3\u8bfb\uff0c\u5305\u62ec\u53d8\u91cf\u7684\u58f0\u660e\u3001\u4f5c\u7528\u57df\u3001\u547d\u540d\u89c4\u8303\u3001\u7c7b\u578b\u63a8\u65ad\uff08va [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3480,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[83],"tags":[],"class_list":["post-3479","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-c-"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3479","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3479"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3479\/revisions"}],"predecessor-version":[{"id":3481,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3479\/revisions\/3481"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3480"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3479"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3479"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3479"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}