WPF TwoWay 将一些元素绑定到 ObservableCollection

发布于 2024-12-08 15:21:48 字数 880 浏览 0 评论 0原文

我需要将一些 ComboBox 绑定到一个 ObservableCollection。我有这个ListView。

<ListView x:Name="lwCoefTables" Grid.Column="1" ItemsSource="{Binding Source={StaticResource CollectionCoefContainers}}">
<ListView.ItemTemplate>
    <DataTemplate>
        <ComboBox x:Name="cmbCoefTableTypes" ItemsSource="{Binding Source={StaticResource CollectionCoefLinksTable}}"  
                SelectedItem="{Binding CoefLinksTableType, Mode=TwoWay}" Grid.Column="1" VerticalAlignment="Center" 
                HorizontalAlignment="Left" Width="180" DisplayMemberPath="Name">
        </ComboBox>
    </DataTemplate>
</ListView.ItemTemplate>

我想将我的集合绑定到所有组合框并保存每个组合框的选定项目。如果我填充一个集合并将其绑定到双向模式下的所有组合框，我会得到：

图片

我认为我需要包含一些类似集合的辅助类。怎么做呢？

原文

I need bind some ComboBoxes to one ObservableCollection.
I have this ListView.

<ListView x:Name="lwCoefTables" Grid.Column="1" ItemsSource="{Binding Source={StaticResource CollectionCoefContainers}}">
<ListView.ItemTemplate>
    <DataTemplate>
        <ComboBox x:Name="cmbCoefTableTypes" ItemsSource="{Binding Source={StaticResource CollectionCoefLinksTable}}"  
                SelectedItem="{Binding CoefLinksTableType, Mode=TwoWay}" Grid.Column="1" VerticalAlignment="Center" 
                HorizontalAlignment="Left" Width="180" DisplayMemberPath="Name">
        </ComboBox>
    </DataTemplate>
</ListView.ItemTemplate>

I want bind my collection to all ComboBoxes and save selected items for each ComboBox.
If I fill one collection and bind it to all comboboxes in TwoWay mode I get this:

Picture

I think I need helper class that will contain some similar collections. How to do that?

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

合约呢 2024-12-15 15:21:48

所以我假设 CoefLinksTableType 属性位于 CollectionCoefContainers 内的项目上？

在这种情况下，这应该有效，除非您在 CollectionCoefContainers 中重复使用相同的实例。

例如，

像这样的东西会像你所描述的那样表现。

var vm = new VM();
CollectionCoefContainers.Add(vm);
CollectionCoefContainers.Add(vm);
CollectionCoefContainers.Add(vm);
CollectionCoefContainers.Add(vm);

解决方案是

CollectionCoefContainers.Add(new VM());
CollectionCoefContainers.Add(new VM());
CollectionCoefContainers.Add(new VM());
CollectionCoefContainers.Add(new VM());

让您定义CollectionCoefContainers和CollectionCoefLinksTable可能会很有用

So I assume the CoefLinksTableType property is on the items inside CollectionCoefContainers?

In which case this should work, unless you have the same instance repeated inside CollectionCoefContainers.

e.g.

Something like this would behave as you describe.

var vm = new VM();
CollectionCoefContainers.Add(vm);
CollectionCoefContainers.Add(vm);
CollectionCoefContainers.Add(vm);
CollectionCoefContainers.Add(vm);

The solution would be

CollectionCoefContainers.Add(new VM());
CollectionCoefContainers.Add(new VM());
CollectionCoefContainers.Add(new VM());
CollectionCoefContainers.Add(new VM());

It might be useful to have you definitions of CollectionCoefContainers and CollectionCoefLinksTable

回复收藏 0 原文

~没有更多了~