将 WPF4 Datagrid 绑定到空集合
我有一个对象集合，我试图将其绑定到 DataGrid。当集合中有很多对象时，它工作得很好。但是，当集合为空时，我在 DataGrid 中看到一个空白行，但无法编辑它。当我将其绑定到具有空列表的集合时，会出现两行，并且可以用第一行空来编辑第二行，即使我有验证。我尝试过普通的 List<> 和 ObservableCollection<> 。
如何才能使 DataGrid 可以输入空列表，或者 DataGrid 不允许用户输入第二个空白行？
I have a collection of objects which I am trying to bind to a DataGrid. When the collection has a lot of objects in it, it works fine. When the collection is empty, however, I see a blank row in the DataGrid, however, I cannot edit it. When I bind it to a collection which has an empty list, then two rows appear, and it is possible to edit the second row with the first empty, even though I have validation. I have tried both an ordinary List<>, and an ObservableCollection<>.
How can I make it so that either the DataGrid can enter into an empty list, or that the DataGrid won't let the user enter into the second blank row?
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不管它的价值如何，我确实弄清楚了我的问题是什么。好吧，我修复了这个故障，但我完全不确定为什么它会起作用。
在 DataGrid 的 Binding 字段中，我打开了 Mode=TwoWay。我认为这是必要的，因为我希望网格返回到数据，反之亦然。事实证明，删除它就可以解决问题。
For what its worth, I did figure out what my problem was. Well, I fixed the glitch, but I am not at all sure why it worked.
In the Binding field of the DataGrid, I had Mode=TwoWay on. I thought this was needed, as I wanted the grid to go back to the data, and vice versa. Turns out, removing this fixed the problem.