{"id":2180,"date":"2018-01-19T12:14:03","date_gmt":"2018-01-19T03:14:03","guid":{"rendered":"http:\/\/okamurax.com\/?p=2180"},"modified":"2022-08-23T21:57:58","modified_gmt":"2022-08-23T12:57:58","slug":"c-datatable%e3%81%ablinq%e3%82%92%e4%bd%bf%e3%81%86","status":"publish","type":"post","link":"https:\/\/appbay.org\/?p=2180","title":{"rendered":"C# DataTable \u30e1\u30e2"},"content":{"rendered":"<pre class=\"lang:c# decode:true \">using System.Data;\r\nusing System.Linq;\r\nusing System.Windows.Forms;\r\n\r\nnamespace WindowsFormsApp1\r\n{\r\n    public partial class Form1 : Form\r\n    {\r\n        public Form1()\r\n        {\r\n            InitializeComponent();\r\n\r\n            \/\/ \u30c7\u30fc\u30bf\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\r\n            DataTable dt = new DataTable(\"newTable\");\r\n\r\n            \/\/ \u30ab\u30e9\u30e0\u4f5c\u6210\r\n            string[] cols = new string[] { \"id\", \"name\", \"age\" };\r\n\r\n            foreach (string c in cols)\r\n            {\r\n                dt.Columns.Add(c);\r\n            }\r\n\r\n            \/\/ \u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u4f5c\u6210\r\n            DataSet ds = new DataSet();\r\n\r\n            \/\/ \u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306b\u30c6\u30fc\u30d6\u30eb\u3092\u8ffd\u52a0\r\n            ds.Tables.Add(dt);\r\n\r\n            \/\/ \u5024\u4f5c\u6210(2\u6b21\u5143\u914d\u5217) \r\n            string[,] vals = new string[,] {\r\n                {\"01\", \"02\", \"03\", \"04\"}, \/\/ id\r\n                {\"aa\", \"bb\", \"cc\", \"dd\"}, \/\/ name\r\n                {\"11\", \"12\", \"13\", \"14\"}  \/\/ age\r\n            };\r\n\r\n            for (int r = 0; r &lt; vals.GetLength(1); r++) \/\/ GetLength(0) = 3(1\u6b21\u5143), GetLength(1) = 4(2\u6b21\u5143)\r\n            {\r\n                DataRow row = ds.Tables[\"newTable\"].NewRow();\r\n                \/\/ DataRow row = dt.NewRow(); \u3053\u306e\u3088\u3046\u306b\u3082\u66f8\u3051\u308b\r\n\r\n                row[\"id\"] = vals[0, r]; \/\/ [1\u6b21\u5143\u30012\u6b21\u5143]\r\n                row[\"name\"] = vals[1, r];\r\n                row[\"age\"] = vals[2, r];\r\n\r\n                ds.Tables[\"newTable\"].Rows.Add(row);\r\n            }\r\n\r\n            \/\/ \u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u8a2d\u5b9a\r\n            dataGridView1.DataSource = ds.Tables[\"newTable\"];\r\n\r\n            \/\/ \u6761\u4ef6\u3092\u8ffd\u52a0\u3057\u305f\u30c7\u30fc\u30bf\u30c6\u30fc\u30d6\u30eb\u9593\u3067\u306e\u8907\u5199--------------------------------------------------------\r\n\r\n            var newTable = dt.Clone();\r\n\r\n            \/\/ \u30d9\u30fc\u30b9\u30eb\u30fc\u30d7\r\n            foreach (var baseRow in dt.AsEnumerable())\r\n            {\r\n                \/\/ \u2460\u7279\u5b9a\u306e\u884c\u3092\u98db\u3070\u3059\r\n                if (baseRow[\"id\"].ToString() == \"02\") continue;\r\n\r\n                \/\/ \u2461\u7279\u5b9a\u306e\u6587\u5b57\u5217\u3092\u7f6e\u304d\u63db\u3048\u308b\r\n                if(baseRow[\"age\"].ToString() == \"13\")\r\n                {\r\n                    baseRow[\"age\"] = \"26\";\r\n                }\r\n\r\n                newTable.ImportRow(baseRow);\r\n            }\r\n\r\n            \/\/ \u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u4f5c\u6210\r\n            DataSet ds2 = new DataSet();\r\n\r\n            \/\/ \u30c7\u30fc\u30bf\u30bb\u30c3\u30c8\u306b\u30c6\u30fc\u30d6\u30eb\u3092\u8ffd\u52a0\r\n            ds2.Tables.Add(newTable.Copy());\r\n\r\n            \/\/ \u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u8a2d\u5b9a\r\n            dataGridView2.DataSource = ds2.Tables[\"newTable\"];\r\n        }\r\n    }\r\n}\r\n<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>using System.Data; using System.Linq; using System.Windows.Forms; namespace WindowsFormsApp1 { public partial  &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/appbay.org\/?p=2180\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;C# DataTable \u30e1\u30e2&#8221; \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9],"class_list":["post-2180","post","type-post","status-publish","format-standard","hentry","category-1","tag-c-net"],"_links":{"self":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/2180","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2180"}],"version-history":[{"count":4,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/2180\/revisions"}],"predecessor-version":[{"id":5301,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/2180\/revisions\/5301"}],"wp:attachment":[{"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}