{"id":2047,"date":"2011-02-17T00:27:28","date_gmt":"2011-02-16T06:27:28","guid":{"rendered":"http:\/\/www.moonmile.net\/blog\/archives\/2047"},"modified":"2011-02-17T10:21:32","modified_gmt":"2011-02-17T01:21:32","slug":"%e5%9e%8b%e3%81%aa%e3%81%97datatable%e3%81%8b%e3%82%89%e5%9e%8b%e7%84%a1%e3%81%97datatable%e3%81%ab%e3%82%b3%e3%83%94%e3%83%bc%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"http:\/\/www.moonmile.net\/blog\/archives\/2047","title":{"rendered":"\u578b\u306a\u3057DataTable\u304b\u3089\u578b\u4ed8\u304dDataTable\u306b\u30b3\u30d4\u30fc\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"

\n\u6700\u8fd1\u3060\u3068\u3001LINQ to SQL \u3084 LINQ to Entities \u304c\u3042\u308b\u306e\u3067\u3001DataSet\/DataTable \u306f\u3042\u307e\u308a\u4f7f\u308f\u306a\u3044\u306e\u3067\u3059\u304c\u3001ADO.NET \u3068\u4e91\u3048\u3070\u3001DataAdapter \u3068 DataSet \u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u3057\u305f\u3002
\n\u305d\u306e\u9803\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u578b\u4ed8\u3067\u53d6\u3063\u3066\u3053\u308c\u308b\u3001\u578b\u4ed8\u304dDataSet<\/b>\u306e\u5b58\u5728\u304c\u7d50\u69cb\u5927\u304d\u304b\u3063\u305f\u306e\u3067\u3059\u3002\n<\/p>\n

\n\u3069\u3046\u3044\u3046\u3053\u3068\u304b\u3068\u3044\u3046\u3068\u3001DataTable \u3092\u76f4\u63a5\u6271\u3063\u3066\u3057\u307e\u3063\u305f\u5834\u5408\u3001\n<\/p>\n

\r\nforeach ( DataRow row in dt.Rows ) {\r\n\tint id = (int)row["id"];\r\n\t...\r\n}\r\n<\/pre>\n
\n\u306e\u3088\u3046\u306b\u3001DataRow \u304b\u3089\u5024\u3092\u53d6\u3063\u3066\u304f\u308b\u5834\u5408\u306f\u3001\u5217\u540d\u3092\u6307\u5b9a\u3057\u306a\u3044\u3068\u99c4\u76ee<\/b>\u304b\u3064\u30ad\u30e3\u30b9\u30c8\u3092\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u305a<\/b>\u3001\u3068\u3044\u3046\uff12\u91cd\u82e6\u304c\u5f85\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u304c\u3001\u6587\u5b57\u5217\u306a\u306e\u3067\u3001\u3048\u3048\u3001\u3061\u3087\u3063\u3068\u9593\u9055\u3046\u3068\u3048\u3089\u3044\u3053\u3068\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u306e\u3067\u3059\u3002PHP \u3060\u3068\u3001\u3053\u3093\u306a\u98a8\u306b\u66f8\u304f\u306e\u304c\u666e\u901a\u306a\u306e\u3067\u3001\u7279\u306b\u6c17\u306b\u3057\u306a\u3044\u306e\u3067\u3059\u304c\u3001ASP.NET \u3067\u898f\u6a21\u306e\u5927\u304d\u3044\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3060\u3068\u3001\u3061\u3087\u3063\u3068\u30c7\u30d0\u30c3\u30b0\u304c\u5927\u5909\u306a\u3053\u3068\u306b\u3001\u3063\u3066\u3044\u3046\u5177\u5408\u3067\u3059\u3002\u3053\u308c\u3001\u5b9f\u884c\u6642\u306e\u30a8\u30e9\u30fc\u3067\u3057\u304b\u53d6\u308c\u306a\u3044\u306e\u3067\u3001\u96e3\u3057\u3044\u3093\u3067\u3059\u3088\u306d\u3002\n<\/p>\n
\n\u306a\u306e\u3067\u3001C# \u306e\u53b3\u5bc6\u306a\u578b\u3001\u3068\u3044\u3046\u306e\u3092\u5229\u7528\u3057\u3066\u3001\n<\/p>\n
\r\nforeach ( MyDataRow row in dt.Rows ) {\r\n\tint id = row.id ;\r\n\t...\r\n}\r\n<\/pre>\n
\n\u306e\u3088\u3046\u306b\u3001\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u5024\u3092\u5b89\u5168\u306b\u53d6\u5f97\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u306e\u304c\u3001\u578b\u4ed8<\/b>\u306e\u610f\u5473\u306a\u306e\u3067\u3059\u3002\n<\/p>\n
\n\u3067\u3001\u3053\u306e\u578b\u4ed8DataSet\u3067\u3059\u304c\u3001Visual Studio \u4e0a\u3067\u4f5c\u6210\u3059\u308b\u3068\u81a8\u5927\u306a\u81ea\u52d5\u751f\u6210\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304c\u3042\u3063\u3066\u6574\u7406\u304c\u5927\u5909\u30c3!!! \u3068\u3044\u3046\u3053\u3068\u3082\u3042\u308a\u3001\u3055\u3089\u306b\u3001\u81ea\u524d\u3067\u578b\u4ed8DataTable\u3092\u4f7f\u3044\u305f\u3044\u3068\u304d\u306f\u3001\u3042\u306e\u30c7\u30b6\u30a4\u30ca\u3067\u3061\u307e\u3061\u307e\u5217\u3092\u4f5c\u3089\u306a\u304d\u3083\u306a\u3089\u306a\u3044\u3001\u3068\u3044\u3046\u554f\u984c\u304c\u3042\u308a\u307e\u3057\u3066\u3002\u306a\u3093\u3068\u306a\u304f\u907f\u3051\u3066\u3057\u307e\u3063\u3066\u3001\u3068\u308a\u3042\u3048\u305a\u3001DataSet \u3084 DataTable \u306e\u307e\u307e\u6271\u3063\u3066\u3044\u308b\u306e\u304c\u666e\u901a\u306a\u306e\u3067\u306f\u306a\u3044\u304b\u306a\u3041\u3068\u3002\n<\/p>\n
\n\u305d\u3053\u3067\u3001\u672c\u984c\u3067\u3059\u304c\u3001\u3053\u308c\u3092\u30b3\u30f3\u30d0\u30fc\u30bf\u30fc\u306e\u30af\u30e9\u30b9\u3092\u7528\u610f\u3057\u3066\u3001\u578b\u306a\u3057\u304b\u3089\u578b\u4ed8\u306b\u30b3\u30d4\u30fc\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u3057\u307e\u304a\u3046\u3001\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002\u3067\u3001MyDataTable, MyDataRow \u306e\u4f5c\u6210\u306f\u306a\u308b\u3079\u304f\u624b\u9593\u3092\u304b\u3051\u305f\u304f\u306a\u3044\u3068\u3044\u3046\u8a33\u3067\u3002\n<\/p>\n
\n\u305d\u308c\u3092\u5b9f\u73fe\u3057\u3066\u307f\u305f\u306e\u304c\u6b21\u306e\u30b3\u30fc\u30c9\u3067\u3059\u3002\n<\/p>\n
\r\n\/\/\/ <summary>\r\n\/\/\/ \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u7c21\u5358\u306b\u3059\u308b\u305f\u3081\u306e\u6e96\u5099\r\n\/\/\/ <\/summary>\r\npublic interface IDataTable  \r\n{\r\n    Type GetRowType();\r\n    object CreateRow();\r\n}\r\n\/\/\/ <summary>\r\n\/\/\/ \u578b\u4ed8DataTable\u7528\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\r\n\/\/\/ <\/summary>\r\n\/\/\/ <typeparam name=&quot;DRType&quot;><\/typeparam>\r\npublic class DTTemplate<DRType> : IDataTable, IListSource\r\n{\r\n    \/\/\/ <summary>\r\n    \/\/\/ DataRow \u306e\u578b\u3092\u8fd4\u3059\r\n    \/\/\/ <\/summary>\r\n    \/\/\/ <returns><\/returns>\r\n    public Type GetRowType() {\r\n        return typeof(DRType);\r\n    }\r\n    \/\/\/ <summary>\r\n    \/\/\/ DataRow \u306e\u30ea\u30b9\u30c8\r\n    \/\/\/ <\/summary>\r\n    protected List<DRType> _rows = new List<DRType>();\r\n    public List<DRType> Rows {\r\n        get { return _rows; }\r\n    }\r\n\r\n    \/\/\/ <summary>\r\n    \/\/\/ \u65b0\u3057\u3044 DataRow \u3092\u4f5c\u6210\r\n    \/\/\/ <\/summary>\r\n    \/\/\/ <returns><\/returns>\r\n    public DRType NewRow() {\r\n        return (DRType)Activator.CreateInstance(typeof(DRType));\r\n    }\r\n    \/\/\/ <summary>\r\n    \/\/\/ \u65b0\u3057\u3044 DataRow \u3092\u4f5c\u6210(object\u578b)\r\n    \/\/\/ <\/summary>\r\n    \/\/\/ <returns><\/returns>\r\n    public object CreateRow() {\r\n        return NewRow();\r\n    }\r\n    \r\n    \/\/ \u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\r\n    \/\/\/ <summary>\r\n    \/\/\/ \u5185\u90e8\u30ea\u30b9\u30c8\u304b\u3089 IList \u3092\u4f7f\u3046\r\n    \/\/\/ <\/summary>\r\n    public bool  ContainsListCollection\r\n    {\r\n        get { return true; }\r\n    }\r\n    \/\/\/ <summary>\r\n    \/\/\/ IList\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u8fd4\u3059\r\n    \/\/\/ <\/summary>\r\n    \/\/\/ <returns><\/returns>\r\n    public System.Collections.IList GetList()\r\n    {\r\n        return this.Rows;\r\n    }\r\n}\r\n\r\n\/\/\/ <summary>\r\n\/\/\/ \u3044\u308f\u3086\u308b\u578b\u4ed8DataRow\r\n\/\/\/ <\/summary>\r\npublic class ProductRow  \r\n{\r\n    protected string _id;\r\n    protected string _name;\r\n    protected int _price;\r\n\r\n    \/\/ \u30d7\u30ed\u30d1\u30c6\u30a3\u30a2\u30af\u30bb\u30b9\u306f\u3001C# 3.0 \u306a\u3089\u3070\u3001\r\n    \/\/ public string id { get; set; }\r\n    \/\/ \u3067\u66f8\u3051\u308b.\r\n    \/\/ \u4eca\u56de\u306f v2.0 \u306a\u306e\u3067\u3001\u3053\u306e\u5f62\u5f0f\u3067\u3002\r\n    public string id\r\n    {\r\n        get { return _id; }\r\n        set { _id = value; }\r\n    }\r\n    public string name\r\n    {\r\n        get { return _name; }\r\n        set { _name = value; }\r\n    }\r\n    public int price\r\n    {\r\n        get { return _price; }\r\n        set { _price = value; }\r\n    }\r\n}\r\n\/\/\/ <summary>\r\n\/\/\/ \u578b\u4ed8DataSet\r\n\/\/\/ <\/summary>\r\npublic class Prodcut : DTTemplate<ProductRow>\r\n{\r\n}\r\n\/\/\/ <summary>\r\n\/\/\/ \u5f62\u7121\u3057DataSet\u3092\u578b\u4ed8DataSet\u306b\u30b3\u30f3\u30d0\u30fc\u30c8\u3059\u308b\u30af\u30e9\u30b9\r\n\/\/\/ <\/summary>\r\npublic class DataBind\r\n{\r\n    public static void Conv(DataTable src, IDataTable dest)\r\n    {\r\n        Type rowType = dest.GetRowType();\r\n        System.Collections.IList rows = ((IListSource)dest).GetList();\r\n        foreach (DataRow row in src.Rows)\r\n        {\r\n            object item = dest.CreateRow();\r\n            \/\/ \u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u3063\u3066\u3001\u5217\u3054\u3068\u306b\u30b3\u30d4\u30fc\u3059\u308b\r\n            foreach (DataColumn column in src.Columns)\r\n            {\r\n                \/\/ \u3053\u306e\u90e8\u5206\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3068\u9ad8\u901f\u5316\u3059\u308b\r\n                string key = column.ColumnName;\r\n                PropertyInfo pi = rowType.GetProperty(key);\r\n                if (pi != null)\r\n                {\r\n                    \/\/ object\u578b -> \u5143\u306e\u578b\u306e\u30ad\u30e3\u30b9\u30c8\u3067\u30a8\u30e9\u30fc\u306b\u306a\u308b\u305f\u3081\u3001\r\n                    \/\/ \u4e00\u5ea6\u5143\u306e\u578b\u306b ChangeType \u3057\u3066\u304b\u3089\u4ee3\u5165\u3059\u308b\u3002\r\n                    pi.SetValue(item, \r\n                        Convert.ChangeType(row[key], pi.PropertyType), \r\n                        null);\r\n                }\r\n            }\r\n            rows.Add(item);\r\n        }\r\n    }\r\n}\r\n<\/pre>\n
\n\u3044\u3084\u3041\u3001\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u3063\u3066\u3044\u308b\u3093\u3067\u3059\u304c\u3001\u7d50\u69cb\u5b9f\u73fe\u3059\u308b\u306e\u306f\u9577\u3044\u30b3\u30fc\u30c9\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\u578b\u4ed8\u306e ProductRow \u306f\u3001v2.0 \u306a\u306e\u3067get\/set \u3092\u5225\u306b\u66f8\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304c\u3001v3.0 \u4ee5\u964d\u306a\u3089\u3070\u3001\u6b21\u306e\u3088\u3046\u306b\u77ed\u304f\u66f8\u3051\u307e\u3059\u3002\n<\/p>\n
\r\npublic class ProductRow  \r\n{\r\n    public string id { get; set; }\r\n    public string name { get; set; }\r\n    public int price { get; set; }\r\n}\r\n<\/pre>\n
\n\u305d\u3057\u3066\u3001\u578b\u4ed8DataTable \u306b\u95a2\u3057\u3066\u306f\u3001\u3053\u3093\u306a\u98a8\u306b\u66f4\u306b\u77ed\u304f\u3002\n<\/p>\n
\r\npublic class Prodcut : DTTemplate<ProductRow> {}\r\n<\/pre>\n
\n\u5b9f\u8cea\u30011\u884c\u3067\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\n\u30b3\u30f3\u30d0\u30fc\u30c8\u95a2\u6570\u306f\u3001DataBind.Conv() \u3060\u3051\u3067\u4f7f\u3048\u308b\u306e\u3067\u3001\u975e\u5e38\u306b\u7c21\u5358\u3002\n<\/p>\n
\n\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3066\u3001DataGrid \u306b\u8868\u793a\u3059\u308b\u30b3\u30fc\u30c9\u304c\u3053\u306e\u3088\u3046\u306b\u77ed\u304f\u66f8\u3051\u307e\u3059\u3002\n<\/p>\n
\r\nprivate void button2_Click(object sender, EventArgs e)\r\n{\r\n    \/\/ \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u63a5\u7d9a\r\n    SqlConnection cn = new SqlConnection(@"Data Source=.\\sqlexpress;Initial Catalog=mvcdb;Integrated Security=True;MultipleActiveResultSets=True");\r\n    cn.Open();\r\n    DataTable dt = new DataTable();\r\n    SqlDataAdapter da = new SqlDataAdapter(\r\n        "SELECT * FROM TProduct", cn);\r\n    da.Fill(dt);\r\n    cn.Close();\r\n\r\n    Prodcut product =new Prodcut();\r\n    DataBind.Conv(dt, product);\r\n\r\n    dataGridView1.DataSource = product;\r\n\r\n}\r\n<\/pre>\n
\n\u307e\u3042\u3001\u5358\u7d14\u306b DataGridView \u306e DataSource \u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u3063\u3066\u30d0\u30a4\u30f3\u30c9\u3059\u308b\u5834\u5408\u306f\u3001DataTable \u306e\u307e\u307e\u3067\u3044\u3044\u3093\u3067\u3059\u3051\u3069\u306d\u3002\u5217\u540d\u306a\u3093\u304b\u3067\u6761\u4ef6\u5206\u5c90\u3092\u3059\u308b\u3068\u304d\u306a\u3093\u304b\u3001dt.id \u306e\u3088\u3046\u306a\u30d7\u30ed\u30d1\u30c6\u30a3\u3067\u6307\u5b9a\u3067\u304d\u308b\u3068\u9593\u9055\u3044\u304c\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3088\u306d\u3047\u3002\u3068\u3044\u3046\u8a71\u3067\u3057\u305f\u3002\n<\/p>\n
\n\u3048\u3048\u3068\u3001\u696d\u52d9\u3067\u4f7f\u3046\u30b3\u30fc\u30c9\u306f\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u9ad8\u901f\u5316\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u3068\u3044\u3044\u307e\u3059\u304b\u3001DataBind.Conv \u306e\u3088\u3046\u306b static \u95a2\u6570\u306b\u305b\u305a\u3001\u5b9f\u306f ProductRow \u306e\u884c\u30c6\u30fc\u30d6\u30eb\u3078\u306e\u30de\u30c3\u30d4\u30f3\u30b0\u65b9\u5f0f\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u3001\u3053\u308c\u306f\u5225\u306e\u6a5f\u4f1a\u306b\u7d39\u4ecb\u3057\u307e\u3059\u3002\u5024\u3092\u52a0\u5de5\u3057\u3066 ProductRow \u306b\u8a70\u3081\u8fbc\u3080\u3088\u3046\u306a\u3053\u3068\u3092\u3059\u308b\u305f\u3081\u306b\u3001ProductRow \u306e\u5185\u90e8\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u7528\u610f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6700\u8fd1\u3060\u3068\u3001LINQ to SQL \u3084 LINQ to Entities \u304c\u3042\u308b\u306e\u3067\u3001DataSet\/DataTable \u306f\u3042\u307e\u308a\u4f7f\u308f\u306a\u3044\u306e\u3067\u3059\u304c\u3001ADO.NET \u3068\u4e91\u3048\u3070\u3001DataAdapter \u3068 DataSet \u306e\u7d44 … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2047","post","type-post","status-publish","format-standard","hentry","category-csharp"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/2047","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/comments?post=2047"}],"version-history":[{"count":2,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/2047\/revisions"}],"predecessor-version":[{"id":2049,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/2047\/revisions\/2049"}],"wp:attachment":[{"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/media?parent=2047"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/categories?post=2047"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/tags?post=2047"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}