{"id":126472,"date":"2024-03-24T22:34:50","date_gmt":"2024-03-24T13:34:50","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/net%e3%81%aeexecutereader%e3%83%a1%e3%82%bd%e3%83%83%e3%83%89%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/"},"modified":"2024-03-27T05:23:07","modified_gmt":"2024-03-26T20:23:07","slug":"net%e3%81%aeexecutereader%e3%83%a1%e3%82%bd%e3%83%83%e3%83%89%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/net%e3%81%aeexecutereader%e3%83%a1%e3%82%bd%e3%83%83%e3%83%89%e3%81%ae%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95\/","title":{"rendered":"NET\u306eExecuteReader\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u65b9\u6cd5"},"content":{"rendered":"

.NET\u3067ExecuteReader\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066SQL\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057DataReader\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3059\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n

    \n
  1. \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u6587\u5b57\u5217\u3092\u5f15\u6570\u3068\u3057\u3066\u6e21\u3057\u3066SqlConnection\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n
    string<\/span> connectionString = \"your_connection_string\"<\/span>;\r\nSqlConnection connection = new<\/span> SqlConnection(connectionString);\r\n<\/code><\/pre>\n
      \n
    1. \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u63a5\u7d9a\u3092\u958b\u304f<\/li>\n<\/ol>\n
      connection.Open();\r\n<\/code><\/pre>\n
        \n
      1. SqlCommand\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001SQL\u30af\u30a8\u30ea\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3068SqlConnection\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u3057\u3066\u6e21\u3059\uff1a<\/li>\n<\/ol>\n
        string<\/span> query = \"SELECT * FROM your_table\"<\/span>;\r\nSqlCommand command = new<\/span> SqlCommand(query, connection);\r\n<\/code><\/pre>\n
          \n
        1. ExecuteReader\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057\u3001\u7d50\u679c\u306fSqlDataReader\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n
          SqlDataReader reader = command.ExecuteReader();\r\n<\/code><\/pre>\n
            \n
          1. DataReader\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u884c\u3092\u30a4\u30c6\u30ec\u30fc\u30b7\u30e7\u30f3\u3059\u308b\u30eb\u30fc\u30d7\u3092\u4f7f\u7528\u3057\u3066\u30af\u30a8\u30ea\u30fc\u306e\u7d50\u679c\u3092\u53d6\u5f97\u3059\u308b\u3002<\/li>\n<\/ol>\n
            while<\/span> (reader.Read())\r\n{\r\n\/\/ \u8bfb\u53d6\u6570\u636e<\/span>\r\nstring<\/span> column1 = reader.GetString(0<\/span>); \/\/ \u6839\u636e\u5217\u7d22\u5f15\u83b7\u53d6\u5b57\u7b26\u4e32\u7c7b\u578b\u7684\u6570\u636e<\/span>\r\nint<\/span> column2 = reader.GetInt32(1<\/span>); \/\/ \u6839\u636e\u5217\u7d22\u5f15\u83b7\u53d6\u6574\u578b\u6570\u636e<\/span>\r\n\/\/...<\/span>\r\n}\r\n<\/code><\/pre>\n
              \n
            1. DataReader\u3068\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u3092\u9589\u3058\u308b\uff1a<\/li>\n<\/ol>\n
              reader.Close();\r\nconnection.Close();\r\n<\/code><\/pre>\n
              DataReader\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3057\u7d42\u3048\u305f\u3089\u5fc5\u305a\u9589\u3058\u3066\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3078\u306e\u63a5\u7d9a\u304c\u5fc5\u8981\u306a\u304f\u306a\u3063\u305f\u3089\u63a5\u7d9a\u3092\u9589\u3058\u3066\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001\u30ea\u30bd\u30fc\u30b9\u30ea\u30fc\u30af\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u6b21\u306e\u3088\u3046\u306busing\u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u30ea\u30bd\u30fc\u30b9\u3092\u81ea\u52d5\u7684\u306b\u89e3\u653e\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
              using<\/span> (SqlConnection connection = new<\/span> SqlConnection(connectionString))\r\n{\r\nconnection.Open();\r\n\/\/...<\/span>\r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
              .NET\u3067ExecuteReader\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066SQL\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057DataReader\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3059\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u6587\u5b57\u5217\u3092\u5f15\u6570\u3068\u3057\u3066\u6e21\u3057\u3066SqlConnection\u30aa\u30d6\u30b8\u30a7 […]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-126472","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nNET\u306eExecuteReader\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/ja\/blog\/net\u306eexecutereader\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NET\u306eExecuteReader\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\".NET\u3067ExecuteReader\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066SQL\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057DataReader\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3059\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002 \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\u6587\u5b57\u5217\u3092\u5f15\u6570\u3068\u3057\u3066\u6e21\u3057\u3066SqlConnection\u30aa\u30d6\u30b8\u30a7 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/net\u306eexecutereader\u30e1\u30bd\u30c3\u30c9\u306e\u4f7f\u7528\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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