{"id":3499,"date":"2025-04-13T13:18:24","date_gmt":"2025-04-13T05:18:24","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3499"},"modified":"2025-04-13T13:18:24","modified_gmt":"2025-04-13T05:18:24","slug":"c-%e6%96%b9%e6%b3%95%ef%bc%88methods%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/04\/13\/c-%e6%96%b9%e6%b3%95%ef%bc%88methods%ef%bc%89\/","title":{"rendered":"C# \u65b9\u6cd5\uff08Methods\uff09"},"content":{"rendered":"\n<p>\u4e0b\u9762\u662f\u5173\u4e8e <strong>C# \u65b9\u6cd5\uff08Methods\uff09<\/strong> \u7684\u5168\u9762\u3001\u4e13\u4e1a\u3001\u8be6\u7ec6\u7684\u8bb2\u89e3\uff0c\u5e76\u63d0\u4f9b\u591a\u9014\u5f84\u4f7f\u7528\u65b9\u5f0f\u548c\u5b9e\u7528\u6280\u5de7\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u4ec0\u4e48\u662f\u65b9\u6cd5\uff08Method\uff09\uff1f<\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65b9\u6cd5\u662f\u6267\u884c\u67d0\u79cd\u64cd\u4f5c\u6216\u8fd4\u56de\u67d0\u4e2a\u503c\u7684 <strong>\u4ee3\u7801\u5757<\/strong>\uff0c\u5b83\u662f\u7c7b\u6216\u7ed3\u6784\u4e2d\u5b9a\u4e49\u7684\u6210\u5458\u3002<\/p>\n<\/blockquote>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u65b9\u6cd5\u53ef\u4ee5\u5305\u542b\u53c2\u6570\u5e76\u8fd4\u56de\u7ed3\u679c\u3002<\/li>\n\n\n\n<li>\u65b9\u6cd5\u7684\u8bbe\u8ba1\u662f\u5c01\u88c5\u884c\u4e3a\u7684\u4e3b\u8981\u65b9\u5f0f\uff0c\u662f\u9762\u5411\u5bf9\u8c61\u4e2d<strong>\u5c01\u88c5\u4e0e\u590d\u7528<\/strong>\u7684\u5173\u952e\u3002<\/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\">\u4e8c\u3001C# \u65b9\u6cd5\u7684\u57fa\u672c\u7ed3\u6784<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;\u8bbf\u95ee\u4fee\u9970\u7b26] &#91;\u8fd4\u56de\u7c7b\u578b] \u65b9\u6cd5\u540d(&#91;\u53c2\u6570\u5217\u8868])\n{\n    \/\/ \u65b9\u6cd5\u4f53\n    \/\/ \u8bed\u53e5\n    return &#91;\u503c];\n}<\/code><\/pre>\n\n\n\n<p>\ud83d\udd39 \u793a\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public int Add(int a, int b)\n{\n    return a + b;\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\">\u4e09\u3001\u65b9\u6cd5\u7684\u7ec4\u6210\u8be6\u89e3<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7ec4\u6210\u90e8\u5206<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td>\u8bbf\u95ee\u4fee\u9970\u7b26<\/td><td><code>public<\/code>, <code>private<\/code>, <code>protected<\/code>, <code>internal<\/code> \u63a7\u5236\u65b9\u6cd5\u53ef\u89c1\u6027<\/td><\/tr><tr><td>\u8fd4\u56de\u7c7b\u578b<\/td><td>\u65b9\u6cd5\u6267\u884c\u5b8c\u6bd5\u540e\u8fd4\u56de\u7684\u503c\u7c7b\u578b\uff0c\u5982 <code>int<\/code>, <code>void<\/code>, <code>string<\/code>, \u81ea\u5b9a\u4e49\u7c7b\u578b\u7b49<\/td><\/tr><tr><td>\u65b9\u6cd5\u540d<\/td><td>\u9075\u5faa Pascal \u547d\u540d\u6cd5\uff0c\u5982 <code>CalculateTotal<\/code>, <code>GetData<\/code><\/td><\/tr><tr><td>\u53c2\u6570\u5217\u8868<\/td><td>\u65b9\u6cd5\u63a5\u6536\u7684\u8f93\u5165\uff0c\u53ef\u4ee5\u4e3a\u591a\u4e2a\uff0c\u6709\u9ed8\u8ba4\u503c\u3001\u53ef\u9009\u3001\u5f15\u7528\u3001\u8f93\u51fa\u7b49\u65b9\u5f0f<\/td><\/tr><tr><td>\u65b9\u6cd5\u4f53<\/td><td>\u65b9\u6cd5\u7684\u4e3b\u4f53\u903b\u8f91<\/td><\/tr><tr><td><code>return<\/code> \u8bed\u53e5<\/td><td>\u8fd4\u56de\u503c\uff08\u5982\u679c\u6709\uff09\uff0c<code>void<\/code> \u7c7b\u578b\u53ef\u7701\u7565<\/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\">\u56db\u3001\u5e38\u89c1\u7c7b\u578b\u65b9\u6cd5\u4e3e\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u65e0\u53c2\u65e0\u8fd4\u56de\u503c<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public void SayHello()\n{\n    Console.WriteLine(\"Hello!\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u6709\u53c2\u6709\u8fd4\u56de\u503c<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public double Multiply(double x, double y)\n{\n    return x * y;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u9ed8\u8ba4\u53c2\u6570\uff08C# \u652f\u6301\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public void Greet(string name = \"Guest\")\n{\n    Console.WriteLine($\"Hello, {name}!\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u53ef\u53d8\u53c2\u6570\uff08params\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public int Sum(params int&#91;] numbers)\n{\n    return numbers.Sum();\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5. \u5f15\u7528\u53c2\u6570\uff08ref\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public void UpdateValue(ref int number)\n{\n    number += 10;\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">6. \u8f93\u51fa\u53c2\u6570\uff08out\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public bool TryParseInt(string input, out int result)\n{\n    return int.TryParse(input, out result);\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\">\u4e94\u3001\u65b9\u6cd5\u91cd\u8f7d\uff08Overloading\uff09<\/h2>\n\n\n\n<p>\u540c\u4e00\u4e2a\u7c7b\u4e2d\u53ef\u4ee5\u5b9a\u4e49<strong>\u591a\u4e2a\u540c\u540d\u65b9\u6cd5<\/strong>\uff0c\u53ea\u8981<strong>\u53c2\u6570\u7c7b\u578b\u6216\u4e2a\u6570\u4e0d\u540c<\/strong>\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public void Print(string msg) { }\npublic void Print(string msg, int count) { }\npublic void Print(int code) { }<\/code><\/pre>\n\n\n\n<p>\ud83d\udccc \u91cd\u8f7d\u63d0\u9ad8\u4e86\u65b9\u6cd5\u7684\u7075\u6d3b\u6027\u4e0e\u53ef\u8bfb\u6027\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u5c40\u90e8\u51fd\u6570\uff08C# 7+\uff09<\/h2>\n\n\n\n<p>\u53ef\u5728\u65b9\u6cd5\u5185\u90e8\u5b9a\u4e49\u4e00\u4e2a\u51fd\u6570\uff0c\u53ea\u5728\u5f53\u524d\u65b9\u6cd5\u4f5c\u7528\u57df\u5185\u6709\u6548\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public void MainLogic()\n{\n    int Add(int x, int y) =&gt; x + y;\n    Console.WriteLine(Add(2, 3));\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\">\u4e03\u3001\u9012\u5f52\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u65b9\u6cd5<strong>\u8c03\u7528\u81ea\u8eab<\/strong>\uff0c\u7528\u4e8e\u89e3\u51b3\u9012\u5f52\u95ee\u9898\uff0c\u5982\u9636\u4e58\u3001\u6590\u6ce2\u90a3\u5951\u7b49\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public int Factorial(int n)\n{\n    if (n == 1) return 1;\n    return n * Factorial(n - 1);\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\">\u516b\u3001\u5f02\u6b65\u65b9\u6cd5\uff08async\/await\uff09<\/h2>\n\n\n\n<p>\u5f02\u6b65\u65b9\u6cd5\u7528\u4e8e\u975e\u963b\u585e\u64cd\u4f5c\uff0c\u5982\u7f51\u7edc\u8bf7\u6c42\u3001\u6587\u4ef6 I\/O\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public async Task&lt;string&gt; DownloadDataAsync(string url)\n{\n    using HttpClient client = new HttpClient();\n    return await client.GetStringAsync(url);\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\">\u4e5d\u3001\u9759\u6001\u65b9\u6cd5 vs \u5b9e\u4f8b\u65b9\u6cd5<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7c7b\u578b<\/th><th>\u7279\u70b9<\/th><th>\u793a\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>\u5b9e\u4f8b\u65b9\u6cd5<\/td><td>\u9700\u521b\u5efa\u5bf9\u8c61\u624d\u80fd\u8c03\u7528<\/td><td><code>person.SayHello()<\/code><\/td><\/tr><tr><td>\u9759\u6001\u65b9\u6cd5<\/td><td>\u5c5e\u4e8e\u7c7b\u672c\u8eab\uff0c\u53ef\u76f4\u63a5\u8c03\u7528<\/td><td><code>Math.Sqrt(25)<\/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\">\u5341\u3001\u6700\u4f73\u5b9e\u8df5\u5efa\u8bae<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u2705 \u65b9\u6cd5\u540d\u5e94\u8868\u8fbe\u6e05\u6670\u610f\u56fe\uff0c\u5982 <code>CalculateTax()<\/code>\u3001<code>IsValidEmail()<\/code>\u3002<\/li>\n\n\n\n<li>\u2705 \u4e00\u4e2a\u65b9\u6cd5\u53ea\u505a\u4e00\u4ef6\u4e8b\uff08Single Responsibility Principle\uff09\u3002<\/li>\n\n\n\n<li>\u2705 \u957f\u65b9\u6cd5\u5e94\u62c6\u5206\u4e3a\u591a\u4e2a\u5c0f\u65b9\u6cd5\u4ee5\u63d0\u5347\u53ef\u8bfb\u6027\u3002<\/li>\n\n\n\n<li>\u2705 \u4f7f\u7528\u6ce8\u91ca\u548c XML \u6587\u6863\u6ce8\u91ca\u5e2e\u52a9\u4ed6\u4eba\u7406\u89e3\u65b9\u6cd5\u76ee\u7684\u3002<\/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\">\u5341\u4e00\u3001\u6743\u5a01\u6587\u6863\u53c2\u8003<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud83d\udd17 <a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/programming-guide\/classes-and-structs\/methods\">Microsoft Learn &#8211; Methods<\/a><\/li>\n\n\n\n<li>\ud83d\udd17 <a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/csharp\/language-reference\/keywords\/method\">Methods &#8211; C# language specification<\/a><\/li>\n\n\n\n<li>\ud83d\udd17 <a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/standard\/design-guidelines\/names-of-type-members\">.NET Best Practices &#8211; Naming<\/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\"> \u5341\u4e8c\u3001\u5b9e\u7528\u62d3\u5c55\uff1a\u59d4\u6258\u4e0e\u65b9\u6cd5\u6307\u9488<\/h2>\n\n\n\n<p>\u4f60\u8fd8\u53ef\u4ee5\u5c06\u65b9\u6cd5\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public delegate void LogDelegate(string message);\n\npublic void LogMessage(string msg)\n{\n    Console.WriteLine(msg);\n}\n\nLogDelegate log = LogMessage;\nlog(\"This is a log.\");<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\uff0c\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e0b\u9762\u662f\u5173\u4e8e C# \u65b9\u6cd5\uff08Methods\uff09 \u7684\u5168\u9762\u3001\u4e13\u4e1a\u3001\u8be6\u7ec6\u7684\u8bb2\u89e3\uff0c\u5e76\u63d0\u4f9b\u591a\u9014\u5f84\u4f7f\u7528\u65b9\u5f0f\u548c\u5b9e\u7528\u6280\u5de7\u3002 \u4e00\u3001\u4ec0\u4e48 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3500,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[83],"tags":[],"class_list":["post-3499","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\/3499","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=3499"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3499\/revisions"}],"predecessor-version":[{"id":3501,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3499\/revisions\/3501"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3500"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3499"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3499"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3499"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}