{"id":195709,"date":"2024-11-13T17:15:23","date_gmt":"2024-11-13T09:15:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195709\/"},"modified":"2024-11-13T17:15:25","modified_gmt":"2024-11-13T09:15:25","slug":"%e5%9c%a8-net%e7%92%b0%e5%a2%83%e4%b8%8b%e6%ad%a3%e7%a2%ba%e8%a8%aa%e5%95%8fmysql%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195709\/","title":{"rendered":"\u5728.NET\u74b0\u5883\u4e0b\u6b63\u78ba\u8a2a\u554fMySQL\u6578\u64da\u5eab"},"content":{"rendered":"<h1 id=\"%e5%9c%a8-net%e7%92%b0%e5%a2%83%e4%b8%8b%e6%ad%a3%e7%a2%ba%e8%a8%aa%e5%95%8fmysql%e6%95%b8%e6%93%9a%e5%ba%ab-brYIaPhZbV\">\u5728.NET\u74b0\u5883\u4e0b\u6b63\u78ba\u8a2a\u554fMySQL\u6578\u64da\u5eab<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c.NET\u6846\u67b6\u8207MySQL\u6578\u64da\u5eab\u7684\u7d50\u5408\u8d8a\u4f86\u8d8a\u666e\u904d\u3002\u9019\u7a2e\u7d44\u5408\u4e0d\u50c5\u80fd\u5920\u63d0\u4f9b\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\uff0c\u9084\u80fd\u5920\u5229\u7528.NET\u7684\u5f37\u5927\u529f\u80fd\u4f86\u69cb\u5efa\u7a69\u5b9a\u7684\u61c9\u7528\u7a0b\u5e8f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728.NET\u74b0\u5883\u4e0b\u6b63\u78ba\u8a2a\u554fMySQL\u6578\u64da\u5eab\uff0c\u5305\u62ec\u5fc5\u8981\u7684\u8a2d\u7f6e\u3001\u9023\u63a5\u5b57\u7b26\u4e32\u7684\u914d\u7f6e\u4ee5\u53ca\u57fa\u672c\u7684\u6578\u64da\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-brYIaPhZbV\">1. \u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u5df2\u7d93\u5b89\u88dd\u4e86\u4ee5\u4e0b\u7d44\u4ef6\uff1a<\/p>\n<ul>\n<li>MySQL\u6578\u64da\u5eab\u670d\u52d9\u5668<\/li>\n<li>.NET\u958b\u767c\u74b0\u5883\uff08\u5982Visual Studio\uff09<\/li>\n<li>MySQL Connector\/NET<\/li>\n<\/ul>\n<p>MySQL Connector\/NET\u662f\u4e00\u500b\u7528\u65bc.NET\u61c9\u7528\u7a0b\u5e8f\u8207MySQL\u6578\u64da\u5eab\u4e4b\u9593\u9032\u884c\u901a\u4fe1\u7684\u9a45\u52d5\u7a0b\u5e8f\u3002\u60a8\u53ef\u4ee5\u5f9eMySQL\u7684\u5b98\u65b9\u7db2\u7ad9\u4e0b\u8f09\u4e26\u5b89\u88dd\u6b64\u9a45\u52d5\u7a0b\u5e8f\u3002<\/p>\n<h2 id=\"2-%e9%85%8d%e7%bd%ae%e9%80%a3%e6%8e%a5%e5%ad%97%e7%ac%a6%e4%b8%b2-brYIaPhZbV\">2. \u914d\u7f6e\u9023\u63a5\u5b57\u7b26\u4e32<\/h2>\n<p>\u5728.NET\u61c9\u7528\u7a0b\u5e8f\u4e2d\uff0c\u9023\u63a5\u5b57\u7b26\u4e32\u662f\u7528\u4f86\u6307\u5b9a\u5982\u4f55\u9023\u63a5\u5230\u6578\u64da\u5eab\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57fa\u672c\u7684MySQL\u9023\u63a5\u5b57\u7b26\u4e32\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>Server=localhost;Database=mydatabase;User ID=myusername;Password=mypassword;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u60a8\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u66ff\u63db\u4ee5\u4e0b\u53c3\u6578\uff1a<\/p>\n<ul>\n<li><strong>Server<\/strong>: MySQL\u670d\u52d9\u5668\u7684\u5730\u5740\uff0c\u901a\u5e38\u662flocalhost\u6216IP\u5730\u5740\u3002<\/li>\n<li><strong>Database<\/strong>: \u60a8\u8981\u8a2a\u554f\u7684\u6578\u64da\u5eab\u540d\u7a31\u3002<\/li>\n<li><strong>User ID<\/strong>: \u7528\u65bc\u9023\u63a5\u6578\u64da\u5eab\u7684\u7528\u6236\u540d\u3002<\/li>\n<li><strong>Password<\/strong>: \u5c0d\u61c9\u7528\u6236\u540d\u7684\u5bc6\u78bc\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e5%bb%ba%e7%ab%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-brYIaPhZbV\">3. \u5efa\u7acb\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n<p>\u5728.NET\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u5efa\u7acb\u8207MySQL\u6578\u64da\u5eab\u7684\u9023\u63a5\uff1a<\/p>\n<pre><code>using MySql.Data.MySqlClient;\n\nstring connectionString = \"Server=localhost;Database=mydatabase;User ID=myusername;Password=mypassword;\";\nusing (MySqlConnection connection = new MySqlConnection(connectionString))\n{\n    connection.Open();\n    \/\/ \u9032\u884c\u6578\u64da\u64cd\u4f5c\n}<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86using\u8a9e\u53e5\u4f86\u78ba\u4fdd\u5728\u64cd\u4f5c\u5b8c\u6210\u5f8c\u81ea\u52d5\u95dc\u9589\u9023\u63a5\u3002\u9019\u662f\u4e00\u500b\u826f\u597d\u7684\u7de8\u7a0b\u7fd2\u6163\uff0c\u53ef\u4ee5\u907f\u514d\u8cc7\u6e90\u6cc4\u6f0f\u3002<\/p>\n<h2 id=\"4-%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%95%b8%e6%93%9a%e6%93%8d%e4%bd%9c-brYIaPhZbV\">4. \u57fa\u672c\u7684\u6578\u64da\u64cd\u4f5c<\/h2>\n<p>\u4e00\u65e6\u5efa\u7acb\u4e86\u9023\u63a5\uff0c\u60a8\u5c31\u53ef\u4ee5\u9032\u884c\u57fa\u672c\u7684\u6578\u64da\u64cd\u4f5c\uff0c\u4f8b\u5982\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"4-1-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-brYIaPhZbV\">4.1 \u67e5\u8a62\u6578\u64da<\/h3>\n<pre><code>string query = \"SELECT * FROM mytable\";\nusing (MySqlCommand cmd = new MySqlCommand(query, connection))\n{\n    using (MySqlDataReader reader = cmd.ExecuteReader())\n    {\n        while (reader.Read())\n        {\n            Console.WriteLine(reader[\"column_name\"]);\n        }\n    }\n}<\/code><\/pre>\n<h3 id=\"4-2-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-brYIaPhZbV\">4.2 \u63d2\u5165\u6578\u64da<\/h3>\n<pre><code>string insertQuery = \"INSERT INTO mytable (column1, column2) VALUES (@value1, @value2)\";\nusing (MySqlCommand cmd = new MySqlCommand(insertQuery, connection))\n{\n    cmd.Parameters.AddWithValue(\"@value1\", \"data1\");\n    cmd.Parameters.AddWithValue(\"@value2\", \"data2\");\n    cmd.ExecuteNonQuery();\n}<\/code><\/pre>\n<h3 id=\"4-3-%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-brYIaPhZbV\">4.3 \u66f4\u65b0\u6578\u64da<\/h3>\n<pre><code>string updateQuery = \"UPDATE mytable SET column1 = @value1 WHERE column2 = @value2\";\nusing (MySqlCommand cmd = new MySqlCommand(updateQuery, connection))\n{\n    cmd.Parameters.AddWithValue(\"@value1\", \"newData\");\n    cmd.Parameters.AddWithValue(\"@value2\", \"data2\");\n    cmd.ExecuteNonQuery();\n}<\/code><\/pre>\n<h3 id=\"4-4-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-brYIaPhZbV\">4.4 \u522a\u9664\u6578\u64da<\/h3>\n<pre><code>string deleteQuery = \"DELETE FROM mytable WHERE column1 = @value1\";\nusing (MySqlCommand cmd = new MySqlCommand(deleteQuery, connection))\n{\n    cmd.Parameters.AddWithValue(\"@value1\", \"dataToDelete\");\n    cmd.ExecuteNonQuery();\n}<\/code><\/pre>\n<h2 id=\"5-%e9%8c%af%e8%aa%a4%e8%99%95%e7%90%86-brYIaPhZbV\">5. \u932f\u8aa4\u8655\u7406<\/h2>\n<p>\u5728\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u932f\u8aa4\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528try-catch\u8a9e\u53e5\u4f86\u6355\u7372\u7570\u5e38\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\uff1a<\/p>\n<pre><code>try\n{\n    connection.Open();\n    \/\/ \u6578\u64da\u64cd\u4f5c\n}\ncatch (MySqlException ex)\n{\n    Console.WriteLine(\"MySQL\u932f\u8aa4: \" + ex.Message);\n}\nfinally\n{\n    connection.Close();\n}<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-brYIaPhZbV\">\u7e3d\u7d50<\/h2>\n<p>\u5728.NET\u74b0\u5883\u4e0b\u6b63\u78ba\u8a2a\u554fMySQL\u6578\u64da\u5eab\u9700\u8981\u9069\u7576\u7684\u74b0\u5883\u8a2d\u7f6e\u3001\u6b63\u78ba\u7684\u9023\u63a5\u5b57\u7b26\u4e32\u4ee5\u53ca\u6709\u6548\u7684\u6578\u64da\u64cd\u4f5c\u4ee3\u78bc\u3002\u901a\u904e\u9075\u5faa\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5728\u5176\u61c9\u7528\u7a0b\u5e8f\u4e2d\u96c6\u6210MySQL\u6578\u64da\u5eab\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\u548c\u7a69\u5b9a\u6027\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u8acb\u8003\u616e\u4f7f\u7528\u6211\u5011\u7684\u670d\u52d9\uff0c\u7372\u53d6\u66f4\u591a\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728.NET\u74b0\u5883\u4e0b\u6b63\u78ba\u8a2a\u554fMySQL\u6578\u64da\u5eab\u7684\u6307\u5357\uff0c\u6db5\u84cb\u9023\u63a5\u3001\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\u7684\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-195709","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195709","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=195709"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195709\/revisions"}],"predecessor-version":[{"id":195710,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195709\/revisions\/195710"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=195709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=195709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=195709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}