我在此发言:
startDate = (from n in db.Nodes
where n.SeedID == mySeedID select n.CreatedDate).Max<DateTime>();
如果有数据可查,它会进行罚款。 然而,有些时候,种子是新的,所以没有节点。 该声明产生了一项无效的行动。 我可以在审判/副渔获物中总结这一点。 是否有更好的办法处理这一设想?
我在此发言:
startDate = (from n in db.Nodes
where n.SeedID == mySeedID select n.CreatedDate).Max<DateTime>();
如果有数据可查,它会进行罚款。 然而,有些时候,种子是新的,所以没有节点。 该声明产生了一项无效的行动。 我可以在审判/副渔获物中总结这一点。 是否有更好的办法处理这一设想?
可否使用无效的日期?
startDate = (from n in db.Nodes
where n.SeedID == mySeedID
select (DateTime?)n.CreatedDate).Max<DateTime?>();
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