{"id":1082,"date":"2012-10-11T15:11:56","date_gmt":"2012-10-11T06:11:56","guid":{"rendered":"http:\/\/auctionpro.co.kr\/?p=1082"},"modified":"2012-10-11T15:11:56","modified_gmt":"2012-10-11T06:11:56","slug":"datatable","status":"publish","type":"post","link":"https:\/\/www.auctionpro.co.kr\/?p=1082","title":{"rendered":"DataTable"},"content":{"rendered":"<p><strong>DataTable<\/strong>\uc740 ADO.NET \ub77c\uc774\ube0c\ub7ec\ub9ac\uc758 \uc911\uc2ec \uac1c\uccb4\uc785\ub2c8\ub2e4.\u00a0<strong>DataTable<\/strong>\uc744 \uc0ac\uc6a9\ud558\ub294 \ub2e4\ub978 \uac1c\uccb4\uc5d0\ub294\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.dataset(v=vs.80).aspx\">DataSet<\/a>\u00a0\ubc0f\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.dataview(v=vs.80).aspx\">DataView<\/a>\uac00 \ud3ec\ud568\ub429\ub2c8\ub2e4.<\/p>\n<p><strong>DataTable<\/strong>\u00a0\uac1c\uccb4\uc5d0 \uc561\uc138\uc2a4\ud560 \ub54c\ub294 \uc870\uac74\uc5d0 \ub530\ub77c \ub300\/\uc18c\ubb38\uc790\uac00 \uad6c\ubd84\ub429\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ub450\u00a0<strong>DataTable<\/strong>\uc758 \uc774\ub984\uc774 \uac01\uac01 &#8220;mydatatable&#8221;\uacfc &#8220;Mydatatable&#8221;\uc778 \uacbd\uc6b0\uc5d0\ub294 \ub450 \ud14c\uc774\ube14 \uc911 \ud558\ub098\ub97c \uac80\uc0c9\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \ubb38\uc790\uc5f4\uc5d0\uc11c \ub300\/\uc18c\ubb38\uc790\ub97c \uad6c\ubd84\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ub098 &#8220;mydatatable&#8221;\uc740 \uc788\uace0 &#8220;Mydatatable&#8221;\uc740 \uc5c6\ub294 \uacbd\uc6b0\uc5d0\ub294 \uac80\uc0c9 \ubb38\uc790\uc5f4\uc5d0\uc11c \ub300\/\uc18c\ubb38\uc790\ub97c \uad6c\ubd84\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.tablename(v=vs.80).aspx\">TableName<\/a>\u00a0\uc18d\uc131 \uac12\uc740 \ub3d9\uc77c\ud558\uc9c0\ub9cc\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.namespace(v=vs.80).aspx\">Namespace<\/a>\u00a0\uc18d\uc131 \uac12\uc740 \ub2e4\ub978 \ub450 \uac1c\uc758\u00a0<strong>DataTable<\/strong>\u00a0\uac1c\uccb4\uac00\u00a0<strong>DataSet<\/strong>\uc5d0 \ud3ec\ud568\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<strong>DataTable<\/strong>\u00a0\uac1c\uccb4 \uc791\uc5c5\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc740\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/6zd7cwzh(v=vs.80).aspx\">DataTable \ub9cc\ub4e4\uae30<\/a>\uc744 \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p>\ud504\ub85c\uadf8\ub798\ubc0d \ubc29\uc2dd\uc73c\ub85c\u00a0<strong>DataTable<\/strong>\uc744 \ub9cc\ub4dc\ub294 \uacbd\uc6b0\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.columns(v=vs.80).aspx\">Columns<\/a>\u00a0\uc18d\uc131\uc744 \ud1b5\ud574 \uc561\uc138\uc2a4\ud558\ub294\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datacolumncollection(v=vs.80).aspx\">DataColumnCollection<\/a>\uc5d0\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datacolumn(v=vs.80).aspx\">DataColumn<\/a>\u00a0\uac1c\uccb4\ub97c \ucd94\uac00\ud558\uc5ec \uc2a4\ud0a4\ub9c8\ub97c \uba3c\uc800 \uc815\uc758\ud574\uc57c \ud569\ub2c8\ub2e4.\u00a0<strong>DataColumn<\/strong>\u00a0\uac1c\uccb4 \ucd94\uac00\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc740\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/hfx3s9wd(v=vs.80).aspx\">\ud14c\uc774\ube14\uc5d0 \uc5f4 \ucd94\uac00<\/a>\uc744 \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p><strong>DataTable<\/strong>\uc5d0 \ud589\uc744 \ucd94\uac00\ud558\ub824\uba74 \uba3c\uc800\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.newrow(v=vs.80).aspx\">NewRow<\/a>\u00a0\uba54\uc11c\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc0c8\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datarow(v=vs.80).aspx\">DataRow<\/a>\u00a0\uac1c\uccb4\ub97c \ubc18\ud658\ud574\uc57c \ud569\ub2c8\ub2e4.\u00a0<strong>NewRow<\/strong>\u00a0\uba54\uc11c\ub4dc\ub294 \ud14c\uc774\ube14\uc758<strong>DataColumnCollection<\/strong>\uc5d0\uc11c \uc815\uc758\ub41c\u00a0<strong>DataTable<\/strong>\uc758 \uc2a4\ud0a4\ub9c8\uac00 \uc788\ub294 \ud589\uc744 \ubc18\ud658\ud569\ub2c8\ub2e4.\u00a0<strong>DataTable<\/strong>\uc5d0\ub294 \ud589\uc744 \ucd5c\ub300 16,777,216\uac1c\uae4c\uc9c0 \uc800\uc7a5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc790\uc138\ud55c \ub0b4\uc6a9\uc740\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/z16c79x4(v=vs.80).aspx\">\ud14c\uc774\ube14\uc5d0 \ub370\uc774\ud130 \ucd94\uac00<\/a>\uc744 \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p>\ub610\ud55c\u00a0<strong>DataTable<\/strong>\uc5d0\ub294 \ub370\uc774\ud130 \ubb34\uacb0\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \ub370 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.constraint(v=vs.80).aspx\">Constraint<\/a>\u00a0\uac1c\uccb4\uc758 \uceec\ub809\uc158\uc774 \ub4e4\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \uc790\uc138\ud55c \ub0b4\uc6a9\uc740\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/st1t2c35(v=vs.80).aspx\">\ud14c\uc774\ube14\uc5d0 \uc81c\uc57d \uc870\uac74 \ucd94\uac00<\/a>\ub97c \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p><a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.rowchanged(v=vs.80).aspx\">RowChanged<\/a>,\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.rowchanging(v=vs.80).aspx\">RowChanging<\/a>,\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.rowdeleting(v=vs.80).aspx\">RowDeleting<\/a>\u00a0\ubc0f\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.rowdeleted(v=vs.80).aspx\">RowDeleted<\/a>\uc640 \uac19\uc774 \ud14c\uc774\ube14\uc774 \ubcc0\uacbd\ub420 \ub54c \uc774\ub97c \ud655\uc778\ud558\ub294 \ub370 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc5ec\ub7ec\u00a0<strong>DataTable<\/strong>\u00a0\uc774\ubca4\ud2b8\uac00 \uc788\uc2b5\ub2c8\ub2e4.<strong>DataTable<\/strong>\uacfc \ud568\uaed8 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub294 \uc774\ubca4\ud2b8\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc740\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/w9y9a401(v=vs.80).aspx\">DataTable \uc774\ubca4\ud2b8 \uc0ac\uc6a9<\/a>\uc744 \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p><strong>DataTable<\/strong>\uc758 \uc778\uc2a4\ud134\uc2a4\ub97c \ub9cc\ub4dc\ub294 \uacbd\uc6b0 \uc77c\ubd80 \uc77d\uae30\/\uc4f0\uae30 \uc18d\uc131\uc774 \ucd08\uae30 \uac12\uc73c\ub85c \uc124\uc815\ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uac12\uc758 \ubaa9\ub85d\uc740\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datatable.datatable(v=vs.80).aspx\">System.Data.DataTable<\/a>\u00a0\uc0dd\uc131\uc790 \ud56d\ubaa9\uc744 \ucc38\uc870\ud558\uc2ed\uc2dc\uc624.<\/p>\n<p>\ub2e4\uc74c \uc608\uc81c\uc5d0\uc11c\ub294 \ub450 \uac1c\uc758\u00a0<strong>DataTable<\/strong>\u00a0\uac1c\uccb4\uc640 \ud558\ub098\uc758\u00a0<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.data.datarelation(v=vs.80).aspx\">DataRelation<\/a>\u00a0\uac1c\uccb4\ub97c \ub9cc\ub4e4\uace0 \ud574\ub2f9 \uc0c8 \uac1c\uccb4\ub97c\u00a0<strong>DataSet<\/strong>\uc5d0 \ucd94\uac00\ud569\ub2c8\ub2e4. \uadf8\ub7f0 \ub2e4\uc74c \ud574\ub2f9 \ud14c\uc774\ube14\uc744<a href=\"http:\/\/msdn.microsoft.com\/ko-kr\/library\/system.windows.forms.datagridview(v=vs.80).aspx\">DataGridView<\/a>\u00a0\ucee8\ud2b8\ub864\uc5d0 \ud45c\uc2dc\ud569\ub2c8\ub2e4.<\/p>\n<pre>\/\/ Put the next line into the Declarations section.\r\nprivate System.Data.DataSet dataSet;\r\n\r\nprivate void MakeDataTables()\r\n{\r\n    \/\/ Run all of the functions. \r\n    MakeParentTable();\r\n    MakeChildTable();\r\n    MakeDataRelation();\r\n    BindToDataGrid();\r\n}\r\n\r\nprivate void MakeParentTable()\r\n{\r\n    \/\/ Create a new DataTable.\r\n    System.Data.DataTable table = new DataTable(\"ParentTable\");\r\n    \/\/ Declare variables for DataColumn and DataRow objects.\r\n    DataColumn column;\r\n    DataRow row;\r\n\r\n    \/\/ Create new DataColumn, set DataType, \r\n    \/\/ ColumnName and add to DataTable.    \r\n    column = new DataColumn();\r\n    column.DataType = System.Type.GetType(\"System.Int32\");\r\n    column.ColumnName = \"id\";\r\n    column.ReadOnly = true;\r\n    column.Unique = true;\r\n    \/\/ Add the Column to the DataColumnCollection.\r\n    table.Columns.Add(column);\r\n\r\n    \/\/ Create second column.\r\n    column = new DataColumn();\r\n    column.DataType = System.Type.GetType(\"System.String\");\r\n    column.ColumnName = \"ParentItem\";\r\n    column.AutoIncrement = false;\r\n    column.Caption = \"ParentItem\";\r\n    column.ReadOnly = false;\r\n    column.Unique = false;\r\n    \/\/ Add the column to the table.\r\n    table.Columns.Add(column);\r\n\r\n    \/\/ Make the ID column the primary key column.\r\n    DataColumn[] PrimaryKeyColumns = new DataColumn[1];\r\n    PrimaryKeyColumns[0] = table.Columns[\"id\"];\r\n    table.PrimaryKey = PrimaryKeyColumns;\r\n\r\n    \/\/ Instantiate the DataSet variable.\r\n    dataSet = new DataSet();\r\n    \/\/ Add the new DataTable to the DataSet.\r\n    dataSet.Tables.Add(table);\r\n\r\n    \/\/ Create three new DataRow objects and add \r\n    \/\/ them to the DataTable\r\n    for (int i = 0; i&lt;= 2; i++)\r\n    {\r\n        row = table.NewRow();\r\n        row[\"id\"] = i;\r\n        row[\"ParentItem\"] = \"ParentItem \" + i;\r\n        table.Rows.Add(row);\r\n    }\r\n}\r\n\r\nprivate void MakeChildTable()\r\n{\r\n    \/\/ Create a new DataTable.\r\n    DataTable table = new DataTable(\"childTable\");\r\n    DataColumn column;\r\n    DataRow row;\r\n\r\n    \/\/ Create first column and add to the DataTable.\r\n    column = new DataColumn();\r\n    column.DataType= System.Type.GetType(\"System.Int32\");\r\n    column.ColumnName = \"ChildID\";\r\n    column.AutoIncrement = true;\r\n    column.Caption = \"ID\";\r\n    column.ReadOnly = true;\r\n    column.Unique = true;\r\n\r\n    \/\/ Add the column to the DataColumnCollection.\r\n    table.Columns.Add(column);\r\n\r\n    \/\/ Create second column.\r\n    column = new DataColumn();\r\n    column.DataType= System.Type.GetType(\"System.String\");\r\n    column.ColumnName = \"ChildItem\";\r\n    column.AutoIncrement = false;\r\n    column.Caption = \"ChildItem\";\r\n    column.ReadOnly = false;\r\n    column.Unique = false;\r\n    table.Columns.Add(column);\r\n\r\n    \/\/ Create third column.\r\n    column = new DataColumn();\r\n    column.DataType= System.Type.GetType(\"System.Int32\");\r\n    column.ColumnName = \"ParentID\";\r\n    column.AutoIncrement = false;\r\n    column.Caption = \"ParentID\";\r\n    column.ReadOnly = false;\r\n    column.Unique = false;\r\n    table.Columns.Add(column);\r\n\r\n    dataSet.Tables.Add(table);\r\n\r\n    \/\/ Create three sets of DataRow objects, \r\n    \/\/ five rows each, and add to DataTable.\r\n    for(int i = 0; i &lt;= 4; i ++)\r\n    {\r\n        row = table.NewRow();\r\n        row[\"childID\"] = i;\r\n        row[\"ChildItem\"] = \"Item \" + i;\r\n        row[\"ParentID\"] = 0 ;\r\n        table.Rows.Add(row);\r\n    }\r\n    for(int i = 0; i &lt;= 4; i ++)\r\n    {\r\n        row = table.NewRow();\r\n        row[\"childID\"] = i + 5;\r\n        row[\"ChildItem\"] = \"Item \" + i;\r\n        row[\"ParentID\"] = 1 ;\r\n        table.Rows.Add(row);\r\n    }\r\n    for(int i = 0; i &lt;= 4; i ++)\r\n    {\r\n        row = table.NewRow();\r\n        row[\"childID\"] = i + 10;\r\n        row[\"ChildItem\"] = \"Item \" + i;\r\n        row[\"ParentID\"] = 2 ;\r\n        table.Rows.Add(row);\r\n    }\r\n}\r\n\r\nprivate void MakeDataRelation()\r\n{\r\n    \/\/ DataRelation requires two DataColumn \r\n    \/\/ (parent and child) and a name.\r\n    DataColumn parentColumn = \r\n        dataSet.Tables[\"ParentTable\"].Columns[\"id\"];\r\n    DataColumn childColumn = \r\n        dataSet.Tables[\"ChildTable\"].Columns[\"ParentID\"];\r\n    DataRelation relation = new \r\n        DataRelation(\"parent2Child\", parentColumn, childColumn);\r\n    dataSet.Tables[\"ChildTable\"].ParentRelations.Add(relation);\r\n}\r\n\r\nprivate void BindToDataGrid()\r\n{\r\n    \/\/ Instruct the DataGrid to bind to the DataSet, with the \r\n    \/\/ ParentTable as the topmost DataTable.\r\n    dataGrid1.SetDataBinding(dataSet,\"ParentTable\");\r\n}<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>DataTable\uc740 ADO.NET \ub77c\uc774\ube0c\ub7ec\ub9ac\uc758 \uc911\uc2ec 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