{"id":1298,"date":"2010-08-29T03:20:40","date_gmt":"2010-08-28T18:20:40","guid":{"rendered":"http:\/\/www.moonmile.net\/blog\/archives\/1298"},"modified":"2017-02-03T22:18:47","modified_gmt":"2017-02-03T13:18:47","slug":"c%e3%81%8b%e3%82%89mysql%e3%82%92%e6%89%b1%e3%81%86%ef%bc%88%e6%9b%b4%e6%96%b0%e7%b7%a8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.moonmile.net\/blog\/archives\/1298","title":{"rendered":"C#\u304b\u3089MySQL\u3092\u6271\u3046\uff08\u66f4\u65b0\u7de8\uff09"},"content":{"rendered":"

C#\u304b\u3089MySQL\u3092\u6271\u3046\uff08\u66f4\u65b0\u7de8\uff09<\/p>\n

\u5c04\u6483\u3057\u306a\u304c\u3089\u524d\u9032\uff08\u3042\u308b\u3044\u306f\u8ff7\u8d70\uff09\u3059\u308b\u65b9\u3078<\/a>\u306e\u63f4\u8b77\u5c04\u6483\u3002\u7b2c\uff12\u5f3e\u3067\u3059\u3002<\/p>\n

MySQL\u3067\u3082\u3001SQL Server\u3067\u3082\u3001Oracle\u3067\u3082\u3001\u30c7\u30fc\u30bf\u3092\u30b0\u30ea\u30c3\u30c9\u3067\u8868\u793a\u3059\u308b\u5834\u5408\u306f\u3001DataSet\u3092\u4f7f\u3046\u306e\u304c\u65ad\u7136\u697d\u3067\u3059\u3002
\n\u9867\u5ba2\u304c\u3001\u30b0\u30ea\u30c3\u30c9\u306e\u30c1\u30fc\u30d7\u306a\u753b\u9762\u3092\u8a31\u5bb9\u3057\u3066\u304f\u3060\u3055\u308b\u306a\u3089\u3070\u3001\u30b0\u30ea\u30c3\u30c9\u3067OK\u3067\u3057\u3087\u3046\u3002<\/p>\n

\r\n\/\/ \u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u4f5c\u6210\r\nMySqlConnection cn = new MySqlConnection(\r\n \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\nMySqlDataAdapter da = new MySqlDataAdapter(\r\n \"SELECT * FROM sample\", cn);\r\nDataTable dt = new DataTable();\r\n\/\/ \u691c\u7d22\r\nda.Fill(dt);\r\n\/\/ \u8868\u793a\r\ndataGridView1.DataSource = dt;\r\n<\/pre>\n
\u3053\u3093\u306a\u98a8\u306b\u3001DataTable \u3092\u4f7f\u3063\u3066\u66f8\u3051\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u3061\u306a\u307f\u306b\u3001DataSet \u3067\u66f8\u304f\u5834\u5408\u306f\u3001<\/p>\n
\r\n\/\/ \u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u4f5c\u6210\r\nMySqlConnection cn = new MySqlConnection(\r\n \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\nMySqlDataAdapter da = new MySqlDataAdapter(\r\n \"SELECT * FROM sample\", cn);\r\nDataSet ds = new DataSet();\r\n\/\/ \u691c\u7d22\r\nda.Fill(ds);\r\n\/\/ \u8868\u793a\r\ndataGridView1.DataSource = ds;\r\n<\/pre>\n
\u4f55\u304c\u9055\u3046\u304b\u3068\u3044\u3046\u3068\uff08\u3053\u308c\u3082\u6b74\u53f2\u7684\u306a\u8a71\u306b\u306a\u308b\u306e\u3067\u3059\u304c\uff09\u3001\u3082\u3068\u3082\u3068\u3001DataSet\u306f\u3001\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u6271\u3048\u308b\u8a2d\u8a08\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u306a\u306e\u3067\u3001DataSet\u306f\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u6271\u3046\u306e\u3067\u3059\u304c\u3001\u666e\u901a\u306f\u4e0a\u306e\u4f8b\u306e\u3088\u3046\u306b\u3001\u3072\u3068\u3064\u306e\u30c6\u30fc\u30d6\u30eb\uff08\u691c\u7d22\u7d50\u679c\uff09\u3057\u304b\u6271\u3044\u307e\u305b\u3093\u3002
\n\u306a\u306e\u3067\u3001<\/p>\n
\r\ndataGridView1.DataSource = ds;\r\n<\/pre>\n
\u3068\u3057\u305f\u5834\u5408\u306f\u3001\u6700\u521d\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u3046\u3001\u3068\u3044\u3046\u4ed5\u69d8\u306b\u306a\u3063\u3066\u3044\u308b\u3093\u3067\u3059\u306d\u3002
\n\u3053\u308c\u304c\u3001ADO.NET \u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067 DataTable \u3063\u3066\u306e\u304c\u51fa\u3066\u304d\u307e\u3057\u305f\u3002\u6240\u8a6e\u3001\u3072\u3068\u3064\u306e\u30c6\u30fc\u30d6\u30eb\u3057\u304b\u6271\u308f\u306a\u3044\u306e\u3067\u3059\u304b\u3089\u3001DataSet\u306e\u90e8\u5206\u306f\u7121\u99c4\u3001\u3068\u3044\u3046\u8003\u3048\u3067\u3059\u3002
\n\u306a\u306e\u3067\u3001DataSet\u3068DataTable\u306f\u3001\u540c\u3058\u3088\u3046\u306b\u6271\u3063\u3066\u5927\u4e08\u592b\u3067\u3059\u3002<\/p>\n
 <\/p>\n
\u3061\u306a\u307f\u306b\u3001DataSet\u304b\u3089\u6700\u521d\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u53d6\u308a\u51fa\u3059\u5834\u5408\u306f\u3001<\/p>\n
\r\ndataGridView1.DataSource = ds.Tables[0];\r\n<\/pre>\n
\u3068\u66f8\u304d\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u4f59\u8ac7\u3067\u3059\u304c\u3001DataSet\u306b\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u4f7f\u3046\u5834\u5408\u306f\u3001<\/p>\n
\r\nMySqlDataAdapter da = new MySqlDataAdapter(\r\n \"SELECT * FROM person;\" +\r\n    \"SELECT * FROM company\", cn);\r\nDataSet ds = new DataSet();\r\n\/\/ \u691c\u7d22\r\nda.Fill(ds);\r\n<\/pre>\n
\u306e\u3088\u3046\u306b\u3001\u30c7\u30fc\u30bf\u30a2\u30c0\u30d7\u30bf\u306b\u5bfe\u3057\u3066\u3001SQL\u6587\u3092\u4e8c\u3064\u66f8\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001SQL Server \u306e\u307f\u4f7f\u3048\u308b\u6a5f\u80fd\u3067\u3059\u3002
\n# \u3064\u307e\u308a\u306f\u3001\u3053\u306e\u305f\u3081\u306b DataSet \u306f\u8907\u6570\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n
 <\/p>\n
\u25a0\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0 INSERT<\/strong><\/p>\n
\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3059\u308bINSERT\u6587\u306f\u3001\u901a\u5e38\u306fMySqlCommand\u30af\u30e9\u30b9\u3092\u4f7f\u3044\u307e\u3059\u3002
\n\u3053\u306e\u5834\u5408\u3001\u7d20\u76f4\u306bMySqlCommand\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u305f\u306e\u304c\u6b21\u306e\u4f8b\u3067\u3059\u3002<\/p>\n
\r\nMySqlConnection cn = new MySqlConnection(\r\n        \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlCommand cmd =\r\n    new MySqlCommand(\"insert into sample values (10,'konica',null,null)\", cn);\r\n\/\/ \u30aa\u30fc\u30d7\u30f3\r\ncmd.Connection.Open();\r\n\/\/ \u5b9f\u884c\r\ncmd.ExecuteNonQuery();\r\n\/\/ \u30af\u30ed\u30fc\u30ba\r\ncmd.Connection.Close();\r\n<\/pre>\n
SELECT\u306e\u5834\u5408\u3068\u9055\u3046\u306e\u306f\u3001\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u30aa\u30fc\u30d7\u30f3\u3068\u30af\u30ed\u30fc\u30ba\u3092\u524d\u5f8c\u306b\u5165\u308c\u306a\u3044\u3068\u99c4\u76ee\u306a\u3068\u3053\u308d\u3067\u3059\u306d\u3002
\n\u5b9f\u306f\u3001\u3053\u306e\u30aa\u30fc\u30d7\u30f3\uff06\u30af\u30ed\u30fc\u30ba\u306f\u30c7\u30fc\u30bf\u30a2\u30c0\u30d7\u30bf\u304c\u62c5\u3063\u3066\u3044\u308b\u306e\u3067\u3059\u3002
\n\u30c7\u30fc\u30bf\u30a2\u30c0\u30d7\u30bf\u3092\u4f7f\u3063\u3066 INSERT \u6587\u3092\u5b9f\u884c\u3059\u308b\u5834\u5408\u306f\u3001\u3053\u3093\u306a\u98a8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\r\n\r\nMySqlConnection cn = new MySqlConnection(\r\n        \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlDataAdapter da =\r\n    new MySqlDataAdapter(\"insert into sample values (11,'konica',null,null)\", cn);\r\n\/\/ \u30c7\u30fc\u30bf\u30c6\u30fc\u30d6\u30eb\r\nDataTable dt = new DataTable();\r\n\/\/ \u5b9f\u884c\r\nda.Fill(dt);\r\n\/\/ \u7d50\u679c\u306f\u7121\u8996\r\n<\/pre>\n
SELECT\u6587\u3068\u306f\u9055\u3063\u3066\u3001Fill\u30e1\u30bd\u30c3\u30c9\u3067\u547c\u3073\u51fa\u3057\u305f\u5f8c\u306e\u7d50\u679c\u306f\u7121\u8996\u3057\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u3055\u3066\u3001\u3053\u306e\u307e\u307eSQL\u6587\u3092\u66f8\u3044\u3066\u3082\u3044\u3044\u306e\u3067\u3059\u304c\u3001\u5404\u30c7\u30fc\u30bf\u3092\u66f8\u304f\u306e\u304c\u975e\u5e38\u306b\u9762\u5012\u3067\u3059\u3002
\n\u3067\u3001\u3088\u304f\u3084\u308b\u30d1\u30bf\u30fc\u30f3\u306f\u3001string\u30af\u30e9\u30b9\u306eFormat\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n
\r\nMySqlCommand cmd =\r\n    new MySqlCommand(\r\n    string.Format(\"insert into sample values ({0},'{1}',{2},{3})\",\r\n        id, name, url, date));\r\n<\/pre>\n
\u5909\u6570\u3092\u4f7f\u3063\u3066\u3001\u6574\u5f62\u3092\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u304c\u3001\u3053\u308c\u306b\u306f\u91cd\u5927\u306a\u6b20\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u30fb\u6587\u5b57\u5217\u306e\u5834\u5408\u306f\u300c’\u300d\u3092\u4f7f\u3063\u3066\u56f2\u307e\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3002\u5fd8\u308c\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3002
\n\u30fbnull\u304c\u6307\u5b9a\u3067\u304d\u306a\u3044\u3002
\n\u30fbSQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u304c\u767a\u751f\u3059\u308b\u3002<\/p>\n
SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u306e\u554f\u984c\u3082\u305d\u3046\u3067\u3059\u304c\u3001\u6587\u5b57\u5217\u3092\u610f\u8b58\u3057\u306a\u3044\u3068\u3044\u3051\u306a\u304b\u3063\u305f\u308a\u3001null\u304c\u6307\u5b9a\u3067\u304d\u306a\u3044\u306e\u306f\u81f4\u547d\u7684\u3067\u3059\u3002\u306a\u306b\u3088\u308a\u3001\u65e5\u4ed8\u578b\uff08DateTime\u578b\uff09\u306e\u6307\u5b9a\u304c\u975e\u5e38\u306b\u56f0\u96e3\u3067\u3059\u3002<\/p>\n
\u306a\u306e\u3067\u3001MySqlCommand\u30af\u30e9\u30b9\u3067\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6307\u5b9a\u3059\u308b\u306e\u304c\u30d9\u30bf\u30fc\u3067\u3059\u3002<\/p>\n
\r\nMySqlConnection cn = new MySqlConnection(\r\n        \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlCommand cmd =\r\n    new MySqlCommand(\"insert into sample values (@id, @name, @url, @date )\", cn);\r\n\/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u8a2d\u5b9a\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"id\", 13));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"name\", \"konica\"));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"url\", null));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"date\", DateTime.Now));\r\n\r\n\/\/ \u30aa\u30fc\u30d7\u30f3\r\ncmd.Connection.Open();\r\n\/\/ \u5b9f\u884c\r\ncmd.ExecuteNonQuery();\r\n\/\/ \u30af\u30ed\u30fc\u30ba\r\ncmd.Connection.Close();\r\n<\/pre>\n
MySqlCommand\u30af\u30e9\u30b9\u3067SQL\u6587\u3092\u6307\u5b9a\u3059\u308b\u6642\u306b\u3001\u300c@name\u300d\u306e\u3088\u3046\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u6307\u5b9a\u3057\u3066\u3001MySqlParameter\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u5024\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u3053\u306e\u3088\u3046\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4f7f\u3046\u3068\u3001\u5148\u306e\uff13\u70b9\u304c\u4e00\u904d\u306b\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3057\u3001\u3055\u3089\u306b\u3001\u65e5\u4ed8\u578b\u306e\u3088\u3046\u306a\u3061\u3087\u3063\u3068\u6307\u5b9a\u306e\u96e3\u3057\u3044\u578b\u3082\u7c21\u5358\u306b\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n
# \u672c\u6765\u306f\u3001\u30b9\u30c8\u30a2\u30c9\u30d7\u30ed\u30b7\u30fc\u30b8\u30e3\u3092\u4f7f\u3046\u306e\u304c\u7b4b\u306a\u306e\u3067\u3059\u304c\u3001SQL\u6587\u306e\u57cb\u3081\u8fbc\u307f\u3068\u30b9\u30c8\u30a2\u30c9\u30d7\u30ed\u30b7\u30fc\u30b8\u30e3\u306f\u300c\u914d\u7f6e\u300d\u304c\u7570\u306a\u308b\u306e\u3067\u3001\u4e00\u6982\u306b\u4ea4\u63db\u3067\u304d\u308b\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002\u306a\u306e\u3067\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3054\u3068\u306b\u3001SQL\u6587\u306e\u57cb\u3081\u8fbc\u307f\u306b\u3059\u308b\u304b\u3001\u30b9\u30c8\u30a2\u30c9\u30d7\u30ed\u30b7\u30fc\u30b8\u30e3\u306b\u3059\u308b\u304b\u3092\u8003\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u25a0\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3067\u81ea\u52d5\u63a1\u756a\u306eID\u3092\u4f7f\u3046\u5834\u5408<\/strong><\/p>\n
\u3055\u3066\u3001INSERT\u6587\u306f\u66f8\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u304c\u3001\u81ea\u52d5\u3067ID\u3092\u632f\u3063\u3066\u3044\u308b\u3068\u304d\u306f\u3069\u3046\u3059\u308b\u306e\u304b\u3001\u304c\u554f\u984c\u3067\u3059\u3002
\n\u3053\u308c\u306f\u666e\u901a\u306b\u6b21\u306e\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\n
\r\nMySqlConnection cn = new MySqlConnection(\r\n        \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlCommand cmd =\r\n    new MySqlCommand(\"insert into sample ( name, url, date ) values ( @name, @url, @date )\", cn);\r\n\/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u8a2d\u5b9a\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"id\", 13));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"name\", \"konica\"));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"url\", null));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"date\", DateTime.Now));\r\n\r\n\/\/ \u30aa\u30fc\u30d7\u30f3\r\ncmd.Connection.Open();\r\n\/\/ \u5b9f\u884c\r\ncmd.ExecuteNonQuery();\r\n\/\/ \u30af\u30ed\u30fc\u30ba\r\ncmd.Connection.Close();\r\n<\/pre>\n
INSERT\u6587\u3067\u5217\u540d\u3092\u6307\u5b9a\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u306d\u3002<\/p>\n
 <\/p>\n
\u305f\u3060\u3057\u3001\u3053\u3053\u3067\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306eINSERT\u3092\u3057\u305f\u5f8c\u3067ID\u3092\u53d6\u5f97\u3057\u305f\u3044\u3068\u304d\u3063\u3066\u3042\u308a\u307e\u3059\u3088\u306d\u3002\u3053\u306e\u5834\u5408\u306f\u3069\u3046\u3059\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f
\n\u3053\u308c\u306f\u3001\u6700\u7d42\u306b\u66f4\u65b0\u3057\u305fID\u3092\u53d6\u5f97\u3059\u308b\u30af\u30a8\u30ea\u3092\u53e9\u304d\u307e\u3059\u3002<\/p>\n
MySQL\u306e\u5834\u5408\u306f\u3001\u300cSELECT LAST_INSERT_ID()\u300d\u3092\u4f7f\u3046\u306e\u3067\u3001<\/p>\n
\r\nMySqlConnection cn = new MySqlConnection(\r\n        \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlCommand cmd =\r\n    new MySqlCommand(\"insert into sample (name, url, updatedate) values (@name, @url, @date)\", cn);\r\n\/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u8a2d\u5b9a\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"name\", \"konica\"));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"url\", null));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"date\", DateTime.Now));\r\nMySqlCommand cmd2 =\r\n    new MySqlCommand(\"SELECT LAST_INSERT_ID()\", cn);\r\n\r\n\/\/ \u30aa\u30fc\u30d7\u30f3\r\ncmd.Connection.Open();\r\n\/\/ \u5b9f\u884c\r\ncmd.ExecuteNonQuery();\r\n\/\/ \u66f4\u65b0ID\u3092\u53d6\u5f97\r\nvar id = cmd2.ExecuteScalar();\r\n\/\/ \u30af\u30ed\u30fc\u30ba\r\ncmd.Connection.Close();\r\n<\/pre>\n
MessageBox.Show(“\u66f4\u65b0ID:” + id);<\/p>\n
 <\/p>\n
\u306e\u3088\u3046\u306b\u52d5\u304b\u305b\u3070\u3001\u6700\u5f8c\u306b\u66f4\u65b0\u3057\u305fID\u3092\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002
\nExecuteScalar\u30e1\u30bd\u30c3\u30c9\u306f\u3001long\u578b\u3092\u8fd4\u3059\u306e\u3067\u3059\u304c\u3001\u30ad\u30e3\u30b9\u30c8\u304c\u9762\u5012\u306a\u306e\u3067var\u578b\u3067\u53d7\u3051\u53d6\u3063\u3066OK\u3067\u3059\u3002<\/p>\n
\u25a0INSERT\u6642\u306e\u4f8b\u5916\u306f\u3069\u3046\u3059\u308b\u306e\u304b\uff1f<\/strong><\/p>\n
INSERT\u6642\u306b\u578b\u30c1\u30a7\u30c3\u30af\u3084ID\u306e\u63a1\u756a\u306a\u3069\u3067\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002
\n\u3053\u308c\u306f\u3001\u666e\u901a\u306bC#\u306e\u4f8b\u5916\u51e6\u7406\uff08try-catch\uff09\u3092\u5165\u308c\u3066\u3084\u308c\u3070\u53d6\u5f97\u3067\u304d\u307e\u3059\u3002<\/p>\n
\r\nMySqlConnection cn = new MySqlConnection(\r\n        \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlCommand cmd =\r\n    new MySqlCommand(\"insert into sample (name, url, updatedate) values (@name, @url, @date)\", cn);\r\n\/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u8a2d\u5b9a\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"name\", \"konica\"));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"url\", null));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"date\", DateTime.Now));\r\nMySqlCommand cmd2 =\r\n    new MySqlCommand(\"SELECT LAST_INSERT_ID()\", cn);\r\ntry\r\n{\r\n    \/\/ \u30aa\u30fc\u30d7\u30f3\r\n    cmd.Connection.Open();\r\n    \/\/ \u5b9f\u884c\r\n    cmd.ExecuteNonQuery();\r\n    \/\/ \u66f4\u65b0ID\u3092\u53d6\u5f97\r\n    var id = cmd2.ExecuteScalar();\r\n    \/\/ \u30af\u30ed\u30fc\u30ba\r\n    cmd.Connection.Close();\r\n}\r\ncatch (SqlException ex)\r\n{\r\n    \/\/ \u4f8b\u5916\u51e6\u7406\r\n    MessageBox.Show(\"\u4f8b\u5916\u767a\u751f:\" + ex.Message);\r\n}\r\n<\/pre>\n
\u25a0\u30c7\u30fc\u30bf\u3092\u524a\u9664 DELETE<\/strong><\/p>\n
 <\/p>\n
\u524a\u9664\u3082\u540c\u3058\u3088\u3046\u306b\u66f8\u3051\u307e\u3059\u3002<\/p>\n
\r\nint id = 15; \/\/ \u524a\u9664\u3059\u308bID\r\n\r\nMySqlConnection cn = new MySqlConnection(\r\n        \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlCommand cmd =\r\n    new MySqlCommand(\"delete from sample where id = @id\", cn);\r\n\/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u8a2d\u5b9a\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"id\", id));\r\n\/\/ \u30aa\u30fc\u30d7\u30f3\r\ncmd.Connection.Open();\r\n\/\/ \u5b9f\u884c\r\ncmd.ExecuteNonQuery();\r\n\/\/ \u30af\u30ed\u30fc\u30ba\r\ncmd.Connection.Close();\r\n<\/pre>\n
\u3053\u3053\u307e\u3067\u6765\u308b\u3068\u7c21\u5358\u3067\u3059\u306d\u3002<\/p>\n
 <\/p>\n
\u25a0\u30c7\u30fc\u30bf\u3092\u66f4\u65b0 UPDATE<\/strong><\/p>\n
\u66f4\u65b0\u3082\u540c\u3058\u3088\u3046\u306b\u66f8\u304d\u307e\u3059\u3002<\/p>\n
\r\nint id = 20; \/\/ \u66f4\u65b0\u3059\u308bID\r\n\r\nMySqlConnection cn = new MySqlConnection(\r\n        \"Data Source=localhost;Database=konicadb;User ID=konica;password=konica\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlCommand cmd =\r\n    new MySqlCommand(\"update sample set updatedate = @date where id = @id\", cn);\r\n\/\/ \u30d1\u30e9\u30e1\u30fc\u30bf\u8a2d\u5b9a\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"id\", id));\r\ncmd.Parameters.Add(\r\n    new MySqlParameter(\"date\", DateTime.Now));\r\n\/\/ \u30aa\u30fc\u30d7\u30f3\r\ncmd.Connection.Open();\r\n\/\/ \u5b9f\u884c\r\ncmd.ExecuteNonQuery();\r\n\/\/ \u30af\u30ed\u30fc\u30ba\r\ncmd.Connection.Close();\r\n<\/pre>\n
\u3053\u3093\u306a\u98a8\u306b\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4f7f\u3046\u3068\u3001\u9806\u4e0d\u540c\u306b\u66f8\u3051\u308b\u306e\u30b3\u30fc\u30c9\u3082\u898b\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002
\n\u25a0DataSet\u3092\u3044\u3064\u66f4\u65b0\u3059\u308b\u306e\u304b\uff1f<\/strong><\/p>\n
 <\/p>\n
\u6240\u8a6e DataSet \u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u306a\u306e\u3067\u3001\u30c7\u30fc\u30bf\u306e\u8ffd\u52a0\/\u524a\u9664\/\u66f4\u65b0\u3057\u305f\u5834\u5408\u306f\u3001\u3082\u3046\u4e00\u5ea6 DataSet \u3092\u8aad\u307f\u76f4\u3059\u306e\u304c\u5409\u3067\u3059\u3002<\/p>\n
DataSet\/DataTable\u306e\u5185\u5bb9\u3092\u76f4\u63a5\u66f4\u65b0\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u304c\u3001\u304b\u3048\u3063\u3066\u3084\u3084\u3053\u3057\u3044\u306e\u3067\u3001\u696d\u52d9\u7684\u306b\u306f\u3084\u3081\u305f\u307b\u3046\u304c\u3044\u3044\u3067\u3059\u3002<\/p>\n
# LINQ to SQL \u3084 ADO.NET Data Entity \u306e\u5834\u5408\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u81ea\u8eab\u305d\u306e\u3082\u306e\u3092\u901a\u3059\u306e\u3067\u3001\u66f4\u65b0\u3057\u306a\u304f\u3066\u3082\u826f\u3044\u3067\u3057\u3087\u3046\u3002\u305f\u3060\u3057\u3001SQL Server \u3068 Oracle \u3057\u304b\u4f7f\u3048\u306a\u3044\u306e\u3067\u3002<\/p>\n
\u624b\u9806\u3068\u3057\u3066\u306f\u3001<\/p>\n
\u30fb\u8ffd\u52a0\u3057\u305f\u3089\u691c\u7d22
\n\u30fb\u524a\u9664\u3057\u305f\u3089\u691c\u7d22
\n\u30fb\u66f4\u65b0\u3057\u305f\u3089\u691c\u7d22<\/p>\n
\u306b\u3057\u307e\u3059\u3002<\/p>\n
\u5177\u4f53\u7684\u306b\u306f\u3001<\/p>\n
\r\nMySqlConnection cn = new MySqlConnection(\"...\");\r\n\/\/ \u30b3\u30de\u30f3\u30c9\u3092\u4f5c\u6210\r\nMySqlCommand cmd =\r\n new MySqlCommand(\"insert into TPerson ( @id, @name, @age )\", cn);\r\ncmd.Parameters.Add(new MySqlParameter(\"id\", 1));\r\ncmd.Parameters.Add(new MySqlParameter(\"name\", \"konica\"));\r\ncmd.Parameters.Add(new MySqlParameter(\"age\", 100));\r\n\/\/ \u5b9f\u884c\r\ncmd.ExecuteNonQuery();\r\n\/\/ DataTabel\/DataSet\u3092\u518d\u8aad\u307f\u8fbc\u307f\r\nMySqlConnection cn = new MySqlConnection(\"...\");\r\nMySqlDataAdapter da = new MySqlDataAdapter(\r\n \"SELECT * FROM TPerson\", cn);\r\nda.Fill(m_dt);\r\n<\/pre>\n
\u306e\u3088\u3046\u306b\u3001\u30ed\u30fc\u30ab\u30eb\u306b\u4fdd\u5b58\u3057\u3066\u3044\u308bDataSet\/DataTable\uff08m_dt\uff09\u306b\u3001\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u25a0DataSet\/DataTable\u3092\u3069\u306e\u3088\u3046\u306a\u5f62\u5f0f\u3067\u6301\u3064\u306e\u304b\uff1f<\/strong><\/p>\n
\u5b9f\u306f\u3001\u4f8b\u3067\u306f Tsample \u7c21\u5358\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u30c7\u30fc\u30bf\u30b0\u30ea\u30c3\u30c9\u306b\u8868\u793a\u3059\u308b\u3060\u3051\u306a\u306e\u3067\u3059\u304c\u3001\u5b9f\u52d9\u3067\u306f\u3082\u3063\u3068\u8907\u96d1\u306a\u5f62\u5f0f\u3067\u30b0\u30ea\u30c3\u30c9\u306b\u8868\u793a\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002
\n\u3053\u306e\u5834\u5408\u306f\u3001\u3069\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u304b\u3092\u300c\u8003\u3048\u308b\u300d\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u3072\u3068\u307e\u305a\u3001\u30a2\u30f3\u30c1\u30d1\u30bf\u30fc\u30f3\u3092\u66f8\u304d\u4e26\u3079\u3066\u304a\u304f\u3068\u3001<\/p>\n
\u30fb\u8907\u6570\u30c6\u30fc\u30d6\u30eb\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u305d\u308c\u305e\u308c\u306e\u30c6\u30fc\u30d6\u30eb\u3092DataTable\u306b\u4fdd\u7ba1\u3057\u3088\u3046\u3068\u3059\u308b\u3002
\n\u30fb\u30b0\u30ea\u30c3\u30c9\u306b\u8868\u793a\u3059\u308b\u3068\u304d\u306b\u3001\u5e38\u306b\u8907\u96d1\u306a\u30d5\u30a3\u30eb\u30bf\u304c\u5fc5\u8981\u306b\u306a\u308b\u3002<\/p>\n
\u3088\u3046\u306a\u8a2d\u8a08\u306b\u306a\u3063\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u8003\u3048\u76f4\u3057\u3066\u304f\u3060\u3055\u3044\u3002
\n\u3053\u306e\u3088\u3046\u306a\u8a2d\u8a08\u306f\u3001\u975e\u5e38\u306b\u30c7\u30fc\u30bf\u3092\u30b7\u30f3\u30d7\u30eb\u306b\u691c\u7d22\u3059\u308b\u65b9\u6cd5\u306b\u5909\u66f4\u3057\u307e\u3059\u3002<\/p>\n
\u6307\u91dd\u3068\u3057\u3066\u306f\u3001<\/p>\n
.\u30c7\u30fc\u30bf\u30b0\u30ea\u30c3\u30c9\u3084\u30ea\u30b9\u30c8\u306b\u8868\u793a\u3059\u308b\u5358\u4f4d\u3067\u3001DataSet\/DataTable \u306b\u4fdd\u5b58\u3059\u308b\u3002<\/p>\n
\u3067OK\u3067\u3059\u3002<\/p>\n
\u4f8b\u3048\u3070\u3001<\/p>\n
TPerson
\n+ id
\n+ name
\n+ age
\n+ companyid<\/p>\n
TCompany
\n+ id
\n+ name<\/p>\n
\u306e\u3088\u3046\u306a\u30c6\u30fc\u30d6\u30eb\u304c\u3042\u3063\u3066\u3001\u30b0\u30ea\u30c3\u30c9\u306b<\/p>\n
+ TPerson.name
\n+ TCompany.name<\/p>\n
\u306e\uff12\u3064\u3092\u8868\u793a\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306f\u3001<\/p>\n
\r\nMySqlDataAdapter da = new MySqlDataAdapter(\r\n \"SELECT p.name as 'PName', c.name as 'CName' \" +\r\n    \" FROM TPerson p, TCompany c \" +\r\n    \" WHERE p.companyid = c.id \";\r\nDataTable dt = new DataTable();\r\n\/\/ \u5b9f\u884c\r\nda.Fill(dt);\r\n<\/pre>\n
\u306e\u3088\u3046\u306b\u3001DataTable \u306b\u4fdd\u5b58\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u3053\u308c\u3092\u8868\u793a\u3059\u308b\u753b\u9762\u3054\u3068\u306b\u53d6\u5f97\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002
\n\u6614\u306a\u3089\u3070\u3001\u30e1\u30e2\u30ea\u304c\u554f\u984c\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u3059\u304c\u3001\u4eca\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306a\u3089\u3070\u3001\u591a\u5c11\u306e\u30e1\u30e2\u30ea\u306e\u30ed\u30b9\u306f\u5927\u4e08\u592b\u3067\u3057\u3087\u3046\u3002
\n\u9006\u306b\u3001\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u3092\u30b0\u30ea\u30c3\u30c9\u306b\u8868\u793a\u3059\u308b\u3088\u3046\u306a\u5834\u5408\u306f\u3001DataSet\u306b\u4fdd\u5b58\u305b\u305a\u306b\u3001\u4e00\u56de\u305a\u3064\u691c\u7d22\u3057\u305f\u307b\u3046\u304c\u826f\u3044\u3057\u3001\u8868\u793a\u5f62\u5f0f\u305d\u306e\u3082\u306e\u3092\u8003\u3048\u76f4\u3059\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
C#\u304b\u3089MySQL\u3092\u6271\u3046\uff08\u66f4\u65b0\u7de8\uff09 \u5c04\u6483\u3057\u306a\u304c\u3089\u524d\u9032\uff08\u3042\u308b\u3044\u306f\u8ff7\u8d70\uff09\u3059\u308b\u65b9\u3078\u306e\u63f4\u8b77\u5c04\u6483\u3002\u7b2c\uff12\u5f3e\u3067\u3059\u3002 MySQL\u3067\u3082\u3001SQL Server\u3067\u3082\u3001Oracle\u3067\u3082\u3001\u30c7\u30fc\u30bf\u3092\u30b0\u30ea\u30c3\u30c9\u3067\u8868\u793a\u3059\u308b\u5834\u5408\u306f\u3001DataSet\u3092\u4f7f\u3046\u306e\u304c … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":2794,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3,38],"tags":[],"class_list":["post-1298","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dev","category-mysql"],"jetpack_featured_media_url":"https:\/\/www.moonmile.net\/blog\/wp-content\/uploads\/2012\/01\/title-mysql.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/1298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/comments?post=1298"}],"version-history":[{"count":8,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/1298\/revisions"}],"predecessor-version":[{"id":8588,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/1298\/revisions\/8588"}],"wp:attachment":[{"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/media?parent=1298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/categories?post=1298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/tags?post=1298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}