c# - ListBoxItem 与 ListViewItem 的 GridViewColumn 绑定(bind)

Question

我一直在摆弄 GridViews 并遇到了绑定(bind)到 GridViewColumns 的奇怪行为。

使用此 XAML:

<ListView Name="lv">
    <ListView.View>
        <GridView>
            <GridViewColumn Header="First" DisplayMemberBinding="{Binding firstName}"/>
            <GridViewColumn Header="Last" DisplayMemberBinding="{Binding lastName}"/>
        </GridView>
    </ListView.View>
</ListView>

为什么下面显示数据:

public class Foo : ListBoxItem {               // ListBoxItem
    public string firstName { get; set; }
    public string lastName { get; set; }
}
public partial class MainWindow : Window {
    public MainWindow() {
        InitializeComponent();
        lv.Items.Add(new Foo { firstName = "John", lastName = "Doe" });
        lv.Items.Add(new Foo { firstName = "Jane", lastName = "Smith" });
    }
}

而下面的不显示数据:

public class Foo : ListViewItem {              // ListViewItem
    public string firstName { get; set; }
    public string lastName { get; set; }
}
public partial class MainWindow : Window {
    public MainWindow() {
        InitializeComponent();
        lv.Items.Add(new Foo { firstName = "John", lastName = "Doe" });
        lv.Items.Add(new Foo { firstName = "Jane", lastName = "Smith" });
    }
}

Answer 1

why does the following display the data ... while the following does not display the data

因为 ListView 控件不会为 ListViewItem 生成任何 ListViewItem 容器。对于您添加到 Items 或 ItemsSource 集合的所有其他类型的对象，将生成隐式 ListViewItem 容器。

请引用this blog post有关元素容器的更多信息。