\u4ee5\u524d\u304b\u3089\u6c17\u306b\u306a\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001DataTable\/DataSet \u3092\u4f7f\u3046\u3068\u9045\u3044<\/b>\u306e\u3067\u306f\uff1f\u3068\u601d\u3063\u3066\u3044\u307e\u3057\u305f\u3002
\n\u5b9f\u969b\u3001Visual Studio \u3067\u81ea\u52d5\u751f\u6210\u3059\u308b\u578b\u4ed8\u306e DataTable \u3092\u4f7f\u3046\u3068\u601d\u3063\u305f\u3088\u3046\u306b\u6027\u80fd\u304c\u3067\u306a\u3044\u3053\u3068\u304c\u591a\u304f\u3001\u7d50\u5c40 SQL \u3067\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3001\u3063\u3066\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u3067\u3001\u5177\u4f53\u7684\u306b\u9045\u305d\u3046\u306a\u3068\u3053\u308d\u3092\u5b9f\u9a13\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n
\u5358\u7d14\u306b DataTable \u306e\u6027\u80fd\u3092\u6bd4\u8f03\u3057\u305f\u3044\u306e\u3067\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u306f\u4f7f\u308f\u305a\u5024\u306e\u4ee3\u5165\u3060\u3051\u5b9f\u9a13\u3057\u307e\u3059\u3002<\/p>\n
\u3053\u308c\u3092\u6b21\u306e\u30d1\u30bf\u30fc\u30f3\u3067\u6bd4\u8f03\u3057\u307e\u3059\u3002<\/p>\n
\u5148\u306b\u7d50\u8ad6\u304b\u3089\u66f8\u304f\u3068\u30011 \u304b\u3089 4 \u307e\u3067\u306f\u5927\u3057\u3066\u30b9\u30d4\u30fc\u30c9\u306f\u5909\u308f\u308a\u307e\u305b\u3093\u3002
\n\u671f\u5f85\u3057\u3066\u305f\u306e\u306f for each \u3092\u4f7f\u3046\u3068\u65e9\u304f\u306a\u308c\u3070\u826f\u304b\u3063\u305f\u3093\u3067\u3059\u3051\u3069\u306d\u30025 % \u3050\u3089\u3044\u3057\u304b\u65e9\u304f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n
\u3067\u3059\u304c\u3001DataTable \u3092\u4f7f\u3046\u306e\u3092\u6b62\u3081\u3066\u3001List \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u4f7f\u3046\u3068 5 \u500d\u3050\u3089\u3044\u65e9\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n
\r\navg. Go1 13.88 sec\r\navg. Go2 13.09 sec\r\navg. Go3 12.98 sec\r\navg. Go4 12.93 sec\r\navg. Go5 2.12 sec\r\navg. Go6 2.08 sec\r\n<\/pre>\n\u3069\u3046\u3082\u3001\u5358\u7d14\u306b DataTable.Rows \u3078\u306e\u30a2\u30af\u30bb\u30b9\u304c\u8907\u96d1\u602a\u5947\u306a\u3093\u3067\u3057\u3087\u3046\u306d\u3047\u3002DataSet, DataTable \u304c\u51fa\u6765\u305f\u306e\u306f generic \u304c\u3067\u304d\u308b\u524d\u306a\u306e\u3067\u3001\u305d\u306e\u3042\u305f\u308a\u306e\u5236\u9650\u3067\u9045\u304f\u306a\u3063\u3066\u3044\u308b\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002
\n.NET Framework \u306e\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\uff08\u3042\u308b\u3044\u306f\u81ea\u52d5\u751f\u6210\u3057\u305f\u3082\u306e\uff09\u3082 generic \u3092\u8003\u616e\u3057\u3066\u3044\u306a\u3044\u30b3\u30fc\u30c9\u304c\u3042\u308b\u306e\u3067\u3001\u305d\u306e\u3042\u305f\u308a\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u7684\u306b\u7121\u99c4\u306b\u306a\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b<\/b>\u3068\u3044\u3046\u3053\u3068\u306e\u306a\u306e\u304b\u3082\u3002<\/p>\n\u4ee5\u4e0b\u306f\u3001VB \u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n
\u25a0\u7d20\u76f4\u306b DataTalbe \u3092\u4f7f\u3046<\/p>\n
\r\n''' <summary>\r\n''' \u7d20\u76f4\u306b Item \u306b\u540d\u524d\u3092\u6307\u5b9a\u3059\u308b\r\n''' <\/summary>\r\n''' <returns><\/returns>\r\n''' <remarks><\/remarks>\r\nPublic Function Go1() As Double\r\n\tDim dt As DataTable = MakeDataTable()\r\n\r\n\t' \u3042\u3048\u3066\u6700\u521d\u306b\u884c\u3092\u8ffd\u52a0\u3057\u3066\u304a\u304f\r\n\tFor i = 0 To 10000 - 1\r\n\t\tDim row As DataRow = dt.NewRow()\r\n\t\tdt.Rows.Add(row)\r\n\tNext\r\n\r\n\tDim start As Date = Date.Now\r\n\tDim tm As Date = Date.Now\r\n\t' \u3042\u3048\u30661\u30ab\u30e9\u30e0\u305a\u3064\u8ffd\u52a0\u3059\u308b\r\n\tFor i = 0 To 10000 - 1\r\n\t\tdt.Rows(i).Item("col000") = tm.ToString() : tm.AddSeconds(1)\r\n\t\tdt.Rows(i).Item("col001") = tm.ToString() : tm.AddSeconds(1)\r\n\t\tdt.Rows(i).Item("col002") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t...\r\n\t\tdt.Rows(i).Item("col097") = tm.ToString() : tm.AddSeconds(1)\r\n\t\tdt.Rows(i).Item("col098") = tm.ToString() : tm.AddSeconds(1)\r\n\t\tdt.Rows(i).Item("col099") = tm.ToString() : tm.AddSeconds(1)\r\n\tNext\r\n\tDim tend As Date = Date.Now\r\n\tDim span As Double = (tend - start).TotalSeconds()\r\n\tConsole.WriteLine("Go1 {0:#.00} sec", span)\r\n\tReturn span\r\nEnd Function\r\n<\/pre>\n\u25a0With \u69cb\u6587\u3092\u4f7f\u3046<\/p>\n
\u3044\u308f\u3086\u308b\u30dd\u30a4\u30f3\u30bf\u30a2\u30af\u30bb\u30b9\u306e\u4ee3\u308f\u308a\u306b with \u69cb\u6587\u3092\u4f7f\u3044\u307e\u3059\u3002
\ndt.Rows(i) \u306e\u3068\u3053\u308d\u304c\u7121\u304f\u306a\u308b\u306e\u3067\u3001\u30b3\u30fc\u30c9\u7684\u306b\u306f\u5b89\u5168\u306b\u306a\u308b\u306e\u3067\u3059\u304c\u3001\u30b9\u30d4\u30fc\u30c9\u306f 2,3 % \u7a0b\u5ea6\u65e9\u304f\u306a\u308b\u7a0b\u5ea6\u3067\u3059\u3002<\/p>\n\r\n''' <summary>\r\n''' With \u69cb\u6587\u3092\u4f7f\u3063\u3066\u307f\u308b\r\n''' <\/summary>\r\n''' <returns><\/returns>\r\n''' <remarks><\/remarks>\r\nPublic Function Go2() As Double\r\n\tDim dt As DataTable = MakeDataTable()\r\n\r\n\t' \u3042\u3048\u3066\u6700\u521d\u306b\u884c\u3092\u8ffd\u52a0\u3057\u3066\u304a\u304f\r\n\tFor i = 0 To 10000 - 1\r\n\t\tDim row As DataRow = dt.NewRow()\r\n\t\tdt.Rows.Add(row)\r\n\tNext\r\n\r\n\tDim start As Date = Date.Now\r\n\tDim tm As Date = Date.Now\r\n\t' \u3042\u3048\u30661\u30ab\u30e9\u30e0\u305a\u3064\u8ffd\u52a0\u3059\u308b\r\n\tFor i = 0 To 10000 - 1\r\n\t\tWith dt.Rows(i)\r\n\t\t\t.Item("col000") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item("col001") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item("col002") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t...\r\n\t\t\t.Item("col097") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item("col098") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item("col099") = tm.ToString() : tm.AddSeconds(1)\r\n\t\tEnd With\r\n\tNext\r\n\tDim tend As Date = Date.Now\r\n\tDim span As Double = (tend - start).TotalSeconds()\r\n\tConsole.WriteLine("Go2 {0:#.00} sec", span)\r\n\tReturn span\r\nEnd Function\r\n<\/pre>\n\u25a0for each \u3092\u4f7f\u3046<\/p>\n
for each \u3092\u4f7f\u3046\u3068\u5287\u7684\u306b\u65e9\u304f\u306a\u308b…\u306e\u304c\u826f\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001\u3042\u307e\u308a\u65e9\u304f\u306a\u308a\u307e\u305b\u3093\u3002
\n10 % \u5f31\u307b\u3069\u65e9\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\r\n''' <summary>\r\n''' for each \u3092\u4f7f\u3046\r\n''' <\/summary>\r\n''' <returns><\/returns>\r\n''' <remarks><\/remarks>\r\nPublic Function Go3() As Double\r\n\tDim dt As DataTable = MakeDataTable()\r\n\r\n\t' \u3042\u3048\u3066\u6700\u521d\u306b\u884c\u3092\u8ffd\u52a0\u3057\u3066\u304a\u304f\r\n\tFor i = 0 To 10000 - 1\r\n\t\tDim row As DataRow = dt.NewRow()\r\n\t\tdt.Rows.Add(row)\r\n\tNext\r\n\r\n\tDim start As Date = Date.Now\r\n\tDim tm As Date = Date.Now\r\n\t' \u3042\u3048\u30661\u30ab\u30e9\u30e0\u305a\u3064\u8ffd\u52a0\u3059\u308b\r\n\tFor Each row As DataRow In dt.Rows\r\n\t\tWith row\r\n\t\t\t.Item("col000") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item("col001") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item("col002") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t...\r\n\t\t\t.Item("col097") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item("col098") = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item("col099") = tm.ToString() : tm.AddSeconds(1)\r\n\t\tEnd With\r\n\tNext\r\n\tDim tend As Date = Date.Now\r\n\tDim span As Double = (tend - start).TotalSeconds()\r\n\tConsole.WriteLine("Go3 {0:#.00} sec", span)\r\n\tReturn span\r\n\r\nEnd Function\r\n<\/pre>\n\u25a0\u540d\u524d\u3092\u4f7f\u308f\u305a\u306b\u6570\u5024\u3092\u4f7f\u3046<\/p>\n
\u6bd4\u8f03\u306e\u305f\u3081\u306b\u5217\u540d\u3067\u306f\u306a\u304f\u3066\u3001\u756a\u53f7\u3092\u4f7f\u3063\u3066\u30a2\u30af\u30bb\u30b9\u3055\u305b\u3066\u307f\u307e\u3059…\u304c\u3001\u3042\u307e\u308a\u65e9\u304f\u306a\u308a\u307e\u305b\u3093\u3002
\nfor each \u3068\u540c\u3058\u3067 10 % \u3050\u3089\u3044\u3067\u3059\u306d\u3002<\/p>\n\r\n''' <summary>\r\n''' \u540d\u524d\u3092\u4f7f\u308f\u305a\u306b index \u3092\u4f7f\u3046\r\n''' <\/summary>\r\n''' <returns><\/returns>\r\n''' <remarks><\/remarks>\r\nPublic Function Go4() As Double\r\n\tDim dt As DataTable = MakeDataTable()\r\n\r\n\t' \u3042\u3048\u3066\u6700\u521d\u306b\u884c\u3092\u8ffd\u52a0\u3057\u3066\u304a\u304f\r\n\tFor i = 0 To 10000 - 1\r\n\t\tDim row As DataRow = dt.NewRow()\r\n\t\tdt.Rows.Add(row)\r\n\tNext\r\n\r\n\tDim start As Date = Date.Now\r\n\tDim tm As Date = Date.Now\r\n\t' \u3042\u3048\u30661\u30ab\u30e9\u30e0\u305a\u3064\u8ffd\u52a0\u3059\u308b\r\n\tFor i = 0 To 10000 - 1\r\n\t\tWith dt.Rows(i)\r\n\t\t\t.Item(0) = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item(1) = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item(2) = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t...\r\n\t\t\t.Item(97) = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item(98) = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.Item(99) = tm.ToString() : tm.AddSeconds(1)\r\n\t\tEnd With\r\n\tNext\r\n\tDim tend As Date = Date.Now\r\n\tDim span As Double = (tend - start).TotalSeconds()\r\n\tConsole.WriteLine("Go4 {0:#.00} sec", span)\r\n\tReturn span\r\n\r\nEnd Function\r\n<\/pre>\n\u25a0list \u3092\u4f7f\u3046<\/p>\n
\u3053\u308c\u4ee5\u4e0a\u306f\u7121\u7406\u304b\u306a\u3041\u3068\u601d\u3063\u3066\u3001list \u306b\u5909\u3048\u3066\u307f\u307e\u3059\u3002
\n\u6700\u521d\u306f\u3001list(of object()) \u3067\u3001object \u306e\u914d\u5217\u306b\u3057\u3066\u307f\u307e\u3059\u3002
\n\u3059\u308b\u3068\u3001\u3059\u3055\u307e\u3058\u304f\u65e9\u304f\u306a\u308a\u307e\u3059\u30025,6 \u500d\u306f\u65e9\u304f\u306a\u308a\u307e\u3059\u306d\u3002<\/p>\n\r\n''' <summary>\r\n''' generic List \u3092\u4f7f\u3046\r\n''' <\/summary>\r\n''' <returns><\/returns>\r\n''' <remarks><\/remarks>\r\nPublic Function Go5() As Double\r\n\r\n\tDim dt As New List(Of Object())\r\n\r\n\tDim start As Date = Date.Now\r\n\tDim tm As Date = Date.Now\r\n\t' \u3042\u3048\u30661\u30ab\u30e9\u30e0\u305a\u3064\u8ffd\u52a0\u3059\u308b\r\n\tFor i = 0 To 10000 - 1\r\n\t\tDim item(100) As Object\r\n\t\titem(0) = tm.ToString() : tm.AddSeconds(1)\r\n\t\titem(1) = tm.ToString() : tm.AddSeconds(1)\r\n\t\titem(2) = tm.ToString() : tm.AddSeconds(1)\r\n\t\t...\r\n\t\titem(97) = tm.ToString() : tm.AddSeconds(1)\r\n\t\titem(98) = tm.ToString() : tm.AddSeconds(1)\r\n\t\titem(99) = tm.ToString() : tm.AddSeconds(1)\r\n\r\n\t\tdt.Add(item)\r\n\r\n\tNext\r\n\tDim tend As Date = Date.Now\r\n\tDim span As Double = (tend - start).TotalSeconds()\r\n\tConsole.WriteLine("Go5 {0:#.00} sec", span)\r\n\tReturn span\r\n\r\nEnd Function\r\n<\/pre>\n\u25a0list \u306b\u69cb\u9020\u4f53\u3092\u4f7f\u3046<\/p>\n
object \u306e\u914d\u5217\u3067\u306f\u6271\u3044\u3065\u3089\u3044\u306e\u3067\u3001\u578b\u4ed8 DataTable \u98a8\u306b\u30d5\u30a3\u30fc\u30eb\u30c9\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3088\u3046\u306b POJO \u306a\u30af\u30e9\u30b9\u3092\u4f5c\u308a\u307e\u3059\u3002
\n\u30a2\u30af\u30bb\u30b9\u304c\u9045\u304f\u306a\u308b\u3068\u601d\u3044\u304d\u3084…\u5168\u7136\u5909\u308f\u308a\u307e\u305b\u3093\u306d\u3002
\nDataRow \u306e\u3068\u3053\u308d\u306b\u30af\u30e9\u30b9\u3092\u4f7f\u3048\u308b\u306e\u304c generic \u306e\u826f\u3044\u3068\u3053\u308d\u3067\u3059\u3002<\/p>\n\r\n''' <summary>\r\n''' generic List \u3067\u69cb\u9020\u4f53\u3092\u4f7f\u3046\r\n''' <\/summary>\r\n''' <returns><\/returns>\r\n''' <remarks><\/remarks>\r\nPublic Function Go6() As Double\r\n\r\n\tDim dt As New List(Of TITEM)\r\n\r\n\tDim start As Date = Date.Now\r\n\tDim tm As Date = Date.Now\r\n\t' \u3042\u3048\u30661\u30ab\u30e9\u30e0\u305a\u3064\u8ffd\u52a0\u3059\u308b\r\n\tFor i = 0 To 10000 - 1\r\n\r\n\t\tDim it As New TITEM\r\n\t\tWith it\r\n\t\t\t.col000 = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.col001 = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.col002 = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t...\r\n\t\t\t.col097 = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.col098 = tm.ToString() : tm.AddSeconds(1)\r\n\t\t\t.col099 = tm.ToString() : tm.AddSeconds(1)\r\n\t\tEnd With\r\n\r\n\t\tdt.Add(it)\r\n\r\n\tNext\r\n\tDim tend As Date = Date.Now\r\n\tDim span As Double = (tend - start).TotalSeconds()\r\n\tConsole.WriteLine("Go6 {0:#.00} sec", span)\r\n\tReturn span\r\n\r\nEnd Function\r\n<\/pre>\n\u4f7f\u3046\u30af\u30e9\u30b9<\/p>\n
\r\nPublic Class TITEM\r\n\tPublic col000 As String\r\n\tPublic col001 As String\r\n\tPublic col002 As String\r\n\t...\r\n\tPublic col097 As String\r\n\tPublic col098 As String\r\n\tPublic col099 As String\r\nEnd Class\r\n<\/pre>\n\u3068\u3044\u3046\u8a33\u3067\u3001DataTable.Rows \u3092\u4f7f\u3046\u3088\u308a\u3082 List(Of \u30af\u30e9\u30b9) \u3092\u4f7f\u3063\u305f\u307b\u3046\u304c 5 \u500d\u65e9\u3044\u308f\u3051\u3067\u3059\u3002
\n\u3053\u306e\u3042\u305f\u308a\u3001SQL Server \u3078\u306e\u30a2\u30af\u30bb\u30b9(SqlCommand, SqlDataAdapter, Linq)\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u8003\u3048\u308b\u3068\u3001<\/p>\n
\u3068\u3059\u308b\u7d44\u307f\u5408\u308f\u305b\u4e00\u756a\u65e9\u3044\u308f\u3051\u3067\u3059\u3002<\/p>\n
\u3055\u3066\u3001\u3053\u308c\u3092\u3069\u306e\u3088\u3046\u306b\u5b9f\u88c5\u3059\u308b\u306e\u304b\uff1f\u3042\u308b\u3044\u306f\u3001\u65e2\u306b\u3042\u308b\u306e\u304b\uff1f\u3063\u3066\u3053\u3068\u3067\u3059\u306d\u3002\u3053\u308c\u306f\u5f8c\u7a0b\u3002<\/p>\n
\uff5e\uff5e\uff5e<\/p>\n
\u8ffd\u8a18 2015\/06\/02 C# \u3067\u66f8\u304d\u63db\u3048\u305f\u306e\u306f\u3053\u3061\u3089 \u4ee5\u524d\u304b\u3089\u6c17\u306b\u306a\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001DataTable\/DataSet \u3092\u4f7f\u3046\u3068\u9045\u3044\u306e\u3067\u306f\uff1f\u3068\u601d\u3063\u3066\u3044\u307e\u3057\u305f\u3002 \u5b9f\u969b\u3001Visual Studio \u3067\u81ea\u52d5\u751f\u6210\u3059\u308b\u578b\u4ed8\u306e DataTable \u3092\u4f7f\u3046\u3068\u601d\u3063\u305f\u3088\u3046\u306b\u6027\u80fd\u304c\u3067\u306a\u3044\u3053\u3068 … \u7d9a\u304d\u3092\u8aad\u3080
\nDataTable \u3088\u308a\u3082 List \u3092\u4f7f\u3046\u3068 10 \u500d\u65e9\u304f\u306a\u308b\uff08\u7d9a\u7de8\uff09 | Moonmile Solutions Blog
\nhttp:\/\/www.moonmile.net\/blog\/archives\/7217<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"