将 ListBoxItem 的 IsSelected 属性绑定到 Itemssource 的 DataContext [英] Binding the IsSelected property of ListBoxItem to DataContext of Itemssource

问题描述

我有一个定义了 Itemssource 的 ListBox:

I have an ListBox with an Itemssource defined:

 <ListBox
    x:Name="ModuleListBox"
    DockPanel.Dock="Top"
    ItemsSource="{Binding MenuItems}">
    <ListBox.ItemContainerStyle>
       <Style TargetType="ListBoxItem">
           <Setter Property="IsSelected" Value="{Binding IsSelected}" />
       </Style>
   </ListBox.ItemContainerStyle>
 </ListBox>

我的 MenuItems ViewModel 实现了 INotifyChanged 接口，如下所示:

My MenuItems ViewModel implements the INotifyChanged Interface and looks like:

public class MenuItemViewModel : BaseViewModel
{
    private bool isSelected;
    public bool IsSelected 
    { 
        get { return isSelected; }  
        set { SetProperty(ref isSelected, value); } 
    }
}

我的列表框所在的视图的视图模型如下所示:

The ViewModel of the View where my Listbox lives in looks like:

public class ShellViewModel : BaseViewModel
{
    public ObservableCollection<MenuItemViewModel> MenuItems
    {
        get { return menuItems; }
        set { SetProperty(ref menuItems, value); }
    }
}

我的问题是如何将 ListBoxItem 的 IsSelected 属性绑定到 MenuItemViewModel 项目对象的 Selected 属性?

My Question is how can i bind the IsSelected Property of the ListBoxItem to the Selected property of MenuItemViewModel item object?

推荐答案

<ListBox
    x:Name="ModuleListBox"
    DockPanel.Dock="Top"
    ItemsSource="{Binding MenuItems}">
    <ListBox.ItemContainerStyle>
       <Style TargetType="ListBoxItem">
           <Setter Property="IsSelected" Value="{Binding RelativeSource={RelativeSource Self}, Path=DataContext.IsSelected}" />
       </Style>
   </ListBox.ItemContainerStyle>
 </ListBox>

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