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在 db4o 下,我试图通过“new DateTime(2010,10,14)”进行约束,但它似乎不起作用 - 关于如何解决这个问题的任何意见?
知道了:
var query2 = db4o.db.Query(); query2.Constrain(typeof(TradingDay)); query2.Descend("_date").Constrain(new DateTime(2010,10,14)); IObjectSet result2 = query2.Execute();