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[Think IT] ç¬¬1å›žï¼šLINQã¨ADO.NET Entity Framework (1/3)
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Ehren 2010/07/15
.Net

LINQ
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Ehren 2010/07/15
.Net

LINQ

ADO.NET
ãƒªãƒ³ã‚¯
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int id = 2;Â Â Â Â Â Â //æŠ½å‡ºæ¡ä»¶ ï¼‘ï¼Žæ¨™æº–ã‚¯ã‚¨ãƒªæ¼”ç®—åã®ãƒ‘ã‚¿ãƒ¼ãƒ³ int total = hogeDataSet.HogeDataTable.AsEnumerable() .Where( r => r.Field<int>(hogeDataSet.HogeDataTable.IDColumn == id) ) .Sum( s => s.Field<int>(hogeDataSet.HogeDataTable.KingakuColumn) ); ï¼’ï¼Žã‚¯ã‚¨ãƒªå¼ã®ãƒ‘ã‚¿ãƒ¼ãƒ³ var drk = from dr in hogeDataSet.HogeDataTable.AsEnumerable() where dr.ID == id select new { kin = dr.Field<int>(hogeDataSet.HogeDataTable.KingakuColumn), i
Ehren 2009/09/04
.NET

LINQ
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