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跟踪更改的集合?
原标题:collections that track changes?

是否有跟踪对集合所做更改的集合?说出删除/修改/添加了哪个对象?

ObservableCollection只是发出通知,它不会将删除的保留在RemovedItems属性中。我必须把它们放在某个地方。实际上,我问这个问题的原因是,如果我将一个集合绑定到数据网格,似乎我必须自己进行更改跟踪,我希望有一个集合会这样做,这样我就知道如何使用集合更新数据库。

DataTable跟踪更改,但使用起来并不那么容易。

问题回答

尝试ObservableCollection。参考文本:

Represents a dynamic data collection that provides notifications when items get added, removed, or when the whole list is refreshed.

编辑。您可能还想尝试使用数据集(即DataSet类及相关)。它们可以执行行版本控制并跟踪行状态更改(新建、编辑、删除),因此可能对您有用。这是对主题的很好介绍:http://msdn.microsoft.com/en-us/library/ww3k31w0.aspx





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