Linq To Sql仅比较时间

如何在不获取以下内容的情况下仅比较DateTime对象的时间

错误：

An exception of type 'System.NotSupportedException' occurred in mscorlib.dll but was not handled in user code Additional information: The specified type member 'TimeOfDay' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported. 

我的代码：

 var date = DateTime.Parse(query.DueTime); entities = entities.Where(r => r.DueTime.TimeOfDay.Equals(date.TimeOfDay)); 

Answer 1

这就是答案！

 var date = DateTime.Parse(query.DueTime); var time = date.TimeOfDay; entities = entities.Where(r => DbFunctions.CreateTime(r.DueTime.Hour, r.DueTime.Minute, r.DueTime.Second) == time); 

Answer 2

您是否尝试过使用EntityFunctions.TruncateTime（TIME）函数？

它会如下：

 var date = DateTime.Parse(query.DueTime); entities = entities.Where(r => EntityFunctions.TruncateTime(r.DueTime) == EntityFunctions.TruncateTime(date)); 

希望这可以帮助！