{"id":59523,"date":"2024-10-12T22:39:14","date_gmt":"2024-10-12T14:39:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/59523\/"},"modified":"2024-10-12T22:39:14","modified_gmt":"2024-10-12T14:39:14","slug":"c%e9%96%8b%e7%99%bcmysql%e4%b8%ad%e6%96%87%e4%ba%82%e7%a2%bc%e7%9a%84%e5%a6%99%e6%8b%9b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/59523\/","title":{"rendered":"C#\u958b\u767cMySQL\u4e2d\u6587\u4e82\u78bc\u7684\u5999\u62db"},"content":{"rendered":"<h1 id=\"c%e9%96%8b%e7%99%bcmysql%e4%b8%ad%e6%96%87%e4%ba%82%e7%a2%bc%e7%9a%84%e5%a6%99%e6%8b%9b-DrYjXmyKXi\">C#\u958b\u767cMySQL\u4e2d\u6587\u4e82\u78bc\u7684\u5999\u62db<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u9ad4\u958b\u767c\u4e2d\uff0cC#\u8207MySQL\u7684\u7d50\u5408\u8d8a\u4f86\u8d8a\u666e\u904d\uff0c\u5c24\u5176\u662f\u5728\u8655\u7406\u4e2d\u6587\u6578\u64da\u6642\uff0c\u958b\u767c\u8005\u7d93\u5e38\u6703\u9047\u5230\u4e82\u78bc\u7684\u554f\u984c\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u63a2\u8a0e\u5982\u4f55\u6709\u6548\u89e3\u6c7aC#\u958b\u767c\u4e2dMySQL\u4e2d\u6587\u4e82\u78bc\u7684\u554f\u984c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u6280\u5de7\u548c\u7bc4\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e4%ba%82%e7%a2%bc%e7%9a%84%e5%8e%9f%e5%9b%a0-DrYjXmyKXi\">\u4e82\u78bc\u7684\u539f\u56e0<\/h2>\n<p>\u5728C#\u8207MySQL\u4e4b\u9593\u50b3\u905e\u4e2d\u6587\u6578\u64da\u6642\uff0c\u4e82\u78bc\u901a\u5e38\u662f\u7531\u65bc\u5b57\u7b26\u7de8\u78bc\u4e0d\u5339\u914d\u6240\u5f15\u8d77\u7684\u3002MySQL\u9ed8\u8a8d\u4f7f\u7528\u7684\u5b57\u7b26\u96c6\u662flatin1\uff0c\u800c\u4e2d\u6587\u5b57\u7b26\u9700\u8981\u4f7f\u7528utf8\u6216utf8mb4\u7de8\u78bc\u3002\u7576\u6578\u64da\u5eab\u548c\u61c9\u7528\u7a0b\u5e8f\u7684\u5b57\u7b26\u96c6\u4e0d\u4e00\u81f4\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u4e82\u78bc\u73fe\u8c61\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-DrYjXmyKXi\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<h3 id=\"1-%e8%a8%ad%e5%ae%9amysql%e5%ad%97%e7%ac%a6%e9%9b%86-DrYjXmyKXi\">1. \u8a2d\u5b9aMySQL\u5b57\u7b26\u96c6<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u4f60\u7684MySQL\u6578\u64da\u5eab\u548c\u8868\u7684\u5b57\u7b26\u96c6\u8a2d\u7f6e\u70bautf8\u6216utf8mb4\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u6aa2\u67e5\u548c\u4fee\u6539\u5b57\u7b26\u96c6\uff1a<\/p>\n<pre><code>-- \u6aa2\u67e5\u6578\u64da\u5eab\u5b57\u7b26\u96c6\nSHOW VARIABLES LIKE 'character_set_database';\n\n-- \u4fee\u6539\u6578\u64da\u5eab\u5b57\u7b26\u96c6\nALTER DATABASE your_database_name CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;\n\n-- \u4fee\u6539\u8868\u5b57\u7b26\u96c6\nALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;<\/code><\/pre>\n<h3 id=\"2-%e5%9c%a8c%e4%b8%ad%e8%a8%ad%e7%bd%ae%e9%80%a3%e6%8e%a5%e5%ad%97%e7%ac%a6%e4%b8%b2-DrYjXmyKXi\">2. \u5728C#\u4e2d\u8a2d\u7f6e\u9023\u63a5\u5b57\u7b26\u4e32<\/h3>\n<p>\u5728C#\u4e2d\u9023\u63a5MySQL\u6642\uff0c\u9023\u63a5\u5b57\u7b26\u4e32\u4e2d\u9700\u8981\u6307\u5b9a\u5b57\u7b26\u96c6\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>string connectionString = \"Server=your_server;Database=your_database;Uid=your_username;Pwd=your_password;charset=utf8mb4;\";\nusing (MySqlConnection conn = new MySqlConnection(connectionString))\n{\n    conn.Open();\n    \/\/ \u9032\u884c\u6578\u64da\u64cd\u4f5c\n}<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%ad%a3%e7%a2%ba%e7%9a%84%e7%b7%a8%e7%a2%bc%e8%ae%80%e5%8f%96%e5%92%8c%e5%af%ab%e5%85%a5%e6%95%b8%e6%93%9a-DrYjXmyKXi\">3. \u4f7f\u7528\u6b63\u78ba\u7684\u7de8\u78bc\u8b80\u53d6\u548c\u5beb\u5165\u6578\u64da<\/h3>\n<p>\u5728\u8b80\u53d6\u548c\u5beb\u5165\u6578\u64da\u6642\uff0c\u78ba\u4fdd\u4f7f\u7528\u6b63\u78ba\u7684\u7de8\u78bc\u3002\u4ee5\u4e0b\u662f\u63d2\u5165\u4e2d\u6587\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>string insertQuery = \"INSERT INTO your_table_name (your_column) VALUES (@value)\";\nusing (MySqlCommand cmd = new MySqlCommand(insertQuery, conn))\n{\n    cmd.Parameters.AddWithValue(\"@value\", \"\u4e2d\u6587\u6578\u64da\");\n    cmd.ExecuteNonQuery();\n}<\/code><\/pre>\n<h3 id=\"4-%e6%b8%ac%e8%a9%a6%e5%92%8c%e9%a9%97%e8%ad%89-DrYjXmyKXi\">4. \u6e2c\u8a66\u548c\u9a57\u8b49<\/h3>\n<p>\u5728\u5b8c\u6210\u4e0a\u8ff0\u8a2d\u7f6e\u5f8c\uff0c\u9032\u884c\u6e2c\u8a66\u4ee5\u78ba\u4fdd\u4e2d\u6587\u6578\u64da\u80fd\u5920\u6b63\u78ba\u986f\u793a\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u6578\u64da\u662f\u5426\u6b63\u78ba\u5b58\u5132\uff1a<\/p>\n<pre><code>string selectQuery = \"SELECT your_column FROM your_table_name\";\nusing (MySqlCommand cmd = new MySqlCommand(selectQuery, conn))\n{\n    using (MySqlDataReader reader = cmd.ExecuteReader())\n    {\n        while (reader.Read())\n        {\n            Console.WriteLine(reader[\"your_column\"].ToString());\n        }\n    }\n}<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-DrYjXmyKXi\">\u7e3d\u7d50<\/h2>\n<p>\u5728C#\u958b\u767c\u4e2d\u8655\u7406MySQL\u4e2d\u6587\u6578\u64da\u6642\uff0c\u907f\u514d\u4e82\u78bc\u7684\u95dc\u9375\u5728\u65bc\u6b63\u78ba\u8a2d\u7f6e\u5b57\u7b26\u96c6\u548c\u7de8\u78bc\u3002\u901a\u904e\u78ba\u4fdd\u6578\u64da\u5eab\u548c\u61c9\u7528\u7a0b\u5e8f\u4e4b\u9593\u7684\u5b57\u7b26\u96c6\u4e00\u81f4\u6027\uff0c\u4e26\u5728C#\u4e2d\u6b63\u78ba\u914d\u7f6e\u9023\u63a5\u5b57\u7b26\u4e32\u548c\u6578\u64da\u64cd\u4f5c\uff0c\u53ef\u4ee5\u6709\u6548\u89e3\u6c7a\u4e82\u78bc\u554f\u984c\u3002\u9019\u4e9b\u6280\u5de7\u4e0d\u50c5\u80fd\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u958b\u767c\u74b0\u5883\u9084\u662f\u751f\u7522\u74b0\u5883\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22C#\u958b\u767c\u4e2d\u89e3\u6c7aMySQL\u4e2d\u6587\u4e82\u78bc\u7684\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u4e2d\u6587\u986f\u793a\u6b63\u78ba\u7121\u8aa4\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-59523","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=59523"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59523\/revisions"}],"predecessor-version":[{"id":59524,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59523\/revisions\/59524"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=59523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=59523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=59523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}