wpf - 将 ListBoxItem 的 IsSelected 属性绑定到对象源中的某个属性

Question

我有一个 WPFListBox控件，并将其设置ItemsSource为项目对象的集合。如何将 的IsSelected属性绑定ListBoxItem到Selected相应项目对象的属性，而无需将对象的实例设置为Binding.Source？

Answer 1

只需覆盖 ItemContainerStyle：

   <ListBox ItemsSource="...">
     <ListBox.ItemContainerStyle>
      <Style TargetType="{x:Type ListBoxItem}">
        <Setter Property="IsSelected" Value="{Binding Selected}"/>
      </Style>
     </ListBox.ItemContainerStyle>
    </ListBox>

哦，顺便说一句，我想你会喜欢 dr.WPF 的这篇精彩文章：ItemsControl: A to Z。

希望这可以帮助。

Answer 2

我一直在寻找代码中的解决方案，所以这里是它的翻译。

System.Windows.Controls.ListBox innerListBox = new System.Windows.Controls.ListBox();

//The source is a collection of my item objects.
innerListBox.ItemsSource = this.Manager.ItemManagers;

//Create a binding that we will add to a setter
System.Windows.Data.Binding binding = new System.Windows.Data.Binding();
//The path to the property on your object
binding.Path = new System.Windows.PropertyPath("Selected"); 
//I was in need of two way binding
binding.Mode = System.Windows.Data.BindingMode.TwoWay;

//Create a setter that we will add to a style
System.Windows.Setter setter = new System.Windows.Setter();
//The IsSelected DP is the property of interest on the ListBoxItem
setter.Property = System.Windows.Controls.ListBoxItem.IsSelectedProperty;
setter.Value = binding;

//Create a style
System.Windows.Style style = new System.Windows.Style();
style.TargetType = typeof(System.Windows.Controls.ListBoxItem);
style.Setters.Add(setter);

//Overwrite the current ItemContainerStyle of the ListBox with the new style 
innerListBox.ItemContainerStyle = style;