如何链接两个列表框以选择/取消选择和激活命令

本文介绍了如何链接两个列表框以选择/取消选择和激活命令的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 我的情景： 两个列表框 - Listbox_01 和 Listbox_02 。 Listbox_01 ItemsSource绑定到ViewModel中的ObservableCollection，SelectionMode设置为Multiple，附加属性将选择限制为2个项目。 SelectedItems（依赖属性）绑定到ViewModel上的属性（IList） Listbox_02 ItemsSource绑定到ViewModel上的属性（IList）（来自Listbox_01的SelectedItems）。 SelectionMode设置为Single。 当我从Listbox_01中选择项目时，所有项目都应出现在Listbox_02中。这适合我。问题是，如何链接这两个列表框以选择和取消选择它们之间的项目。 如果我从Listbox_01中选择两个项目，它们将在Listbox_02中可见。然后，当我从Listbox_02中选择项目时，它应该获得所选项目（列或内容），激活命令（RelayCommand），在Listbox_01上取消选择该项目并从Listbox_02中消失。 这里的问题是，当我点击Listbox_02项目时，Listbox_01上始终有选择，而且从Listbox_02中消失的项目不正确（当我有两个项目时，我点击item_02关闭它，item_01消失） Listbox_01仅用于选择项目。 Listbox_02是执行命令。 我的代码： Listbox_01 < listv：ListViewSelectedItemBehavior SelectionMode = Multiple ItemsSource = {Binding EmployeeViewM.MainActivity} SelectedItemsList = {Binding EmployeeViewM.SelectedAll，Mode = OneWayToSource} 背景 = {x：Null} BorderBrush = {x：Null} IsSynchronizedWithCurrentItem = False > Listbox_02 < listv：ListViewSelectedItemBehavior SelectionMode = 单个 Horizo​​ntalAlignment = 左 ItemsSource = {Binding EmployeeViewM.SelectedAll} SelectedItemsList = {Binding EmployeeViewM.SelectedAll，Mode = TwoWay} 背景 = {x：Null} BorderBrush = {x：Null} IsSynchronizedWithCurrentItem = False > SelectedAll IList 公共 属性 SelectedAll（）作为 IList 获取 返回 _selectedAll 结束 获取 设置（value As IList） _selectedAll = value RaisePropertyChanged（ SelectedAll） 结束 设置 结束 物业 我尝试过： SelectedIndex，SelectedItem，DataGrid而不是Lis tBox，解决方案 解决了这篇文章： 在View Model中管理多个选择（.NET Metro Style Apps） [ ^ ] 谢谢！ Hi,My Scenario:Two ListBoxes - Listbox_01 and Listbox_02.Listbox_01 ItemsSource is bind to a ObservableCollection in a ViewModel, SelectionMode set to Multiple, with attached property to limit the selection to 2 items. SelectedItems (dependency property) is bind to a property (IList) on ViewModelListbox_02 ItemsSource is bind to a property (IList) on a ViewModel (SelectedItems from Listbox_01). SelectionMode set to Single.When I select items from Listbox_01 all should appear in a Listbox_02. This works for me. The question is, How can I link these two Listboxes to select and deselect items between them.If I select two items from Listbox_01 they will be visible in Listbox_02. Then, when I select item from Listbox_02 it should get selected item (columns or content), fire command (RelayCommand), deselect that item on Listbox_01 and disappear from Listbox_02.The problem here is that, when I click on Listbox_02 item there is always selection on Listbox_01 and the item that disappear from Listbox_02 is not correct (when I have two items, I click on the item_02 to close it, item_01 disappears)Listbox_01 is only for selecting items. Listbox_02 is to execute command.My code:Listbox_01<listv:ListViewSelectedItemBehavior SelectionMode="Multiple" ItemsSource="{Binding EmployeeViewM.MainActivity}" SelectedItemsList="{Binding EmployeeViewM.SelectedAll, Mode=OneWayToSource}" Background="{x:Null}" BorderBrush="{x:Null}" IsSynchronizedWithCurrentItem="False" >Listbox_02<listv:ListViewSelectedItemBehavior SelectionMode="Single" HorizontalAlignment="Left" ItemsSource="{Binding EmployeeViewM.SelectedAll}" SelectedItemsList="{Binding EmployeeViewM.SelectedAll, Mode=TwoWay}" Background="{x:Null}" BorderBrush="{x:Null}" IsSynchronizedWithCurrentItem="False">SelectedAll IListPublic Property SelectedAll() As IList Get Return _selectedAll End Get Set(value As IList) _selectedAll = value RaisePropertyChanged("SelectedAll") End SetEnd PropertyWhat I have tried:SelectedIndex, SelectedItem, DataGrid instead of ListBox, 解决方案 Solved thanks to this article:Managing Multiple selection in View Model (.NET Metro Style Apps)[^]Thank you! 这篇关于如何链接两个列表框以选择/取消选择和激活命令的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！