ListViews的ItemsControl，绑定每个ListView的SelectedItem，其中ListViews的数量是动态的，MVVM [英] ItemsControl of ListViews, bind SelectedItem from each ListView where the amount of ListViews are dynamic, MVVM

问题描述

我有一个内部具有ListViews的ItemsControl，以创建自定义网格，如布局
。代码大致类似于此操作，更改了名称并删除了不相关的样式。

I have an ItemsControl with ListViews inside to make a custom grid like layout Here is roughly what the code looks like to do this, names changed and irrelevant styling is removed.

每个ListView是由ItemsSubList的一个实例创建的，因此没有要设置的固定数量的列表框或属性。

Each ListView is created by an instance of ItemsSubList and therefore there is no set amount of listboxes or properties to be made.

有人知道我如何将能够以某种方式将每个列表框的SelectedItem属性绑定到一个列表中。

Does anyone know How I would be able to bind the SelectedItem property of each listbox out somehow, into a list preferably.

<ItemsControl ItemsSource="{Binding Items}">
  <ItemsControl.ItemsPanel>
     <ItemsPanelTemplate>
        <StackPanel Orientation="Horizontal"/>
     </ItemsPanelTemplate>
  </ItemsControl.ItemsPanel>

  <ItemsControl.ItemTemplate>
     <DataTemplate>
         <ListView ItemsSource="{Binding ItemsSubList}" 
                              DisplayMemberPath="ItemVersion" 
                              SelectionMode="Single"
                              Width="100"
                              VerticalAlignment="Top"
                              Background="#282828"
                              BorderBrush="#282828">
         </ListView>
     </DataTemplate>
  </ItemsControl.ItemTemplate>
</ItemsControl>

推荐答案

我会在您的模型中解决它。
您的数据上下文似乎是一个类，其属性为 Items 类型为 ObservableCollection< MyItem> 的类 MyItem ，然后将其作为属性 ItemsSubList ，类型为 ObservableCollection< MySubItem> 。

I would solve it in your Model. Your datacontext seems to be a class with a property Items of type ObservableCollection<MyItem> and your class MyItem then as a property ItemsSubList of type ObservableCollection<MySubItem>. Is that right?

ListView的datacontext是MyItem类型的实例。您可以将属性 SelectedSubItem 添加到类 MyItem 并使用双向绑定将其绑定到列表框。

The datacontext of your ListView is the instance of type MyItem. You can add a Property SelectedSubItem to your class MyItem and bind it with Two-way-binding to your listbox.SelectedItem.

然后在您的主类中，该类保存您的模型以及属性 Items 的住处，在那里添加属性
public List< MySubItem> SelectedSubItems => Items.Select（i => i.SelectedSubItem）.ToList（）; ，该属性可从所有项目中动态选择所有选定的子项目。

And then in your main class, that holds your model and where the property Items lives, there I would add a property public List<MySubItem> SelectedSubItems => Items.Select(i => i.SelectedSubItem).ToList();, a property that dynamically selects all selected subitems from all your items.

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