【发布时间】：2017-02-24 16:50:43
【问题描述】：
在 WPF 项目中，我有一组 record 对象，其属性为 School、Subject、FirstName 和 LastName。记录由School 和Subject 在XAML 中使用CollectionViewSource 分组，TreeView 使用它来显示分组的项目。分组工作正常。
问题是我想显示ListView 中Subject 下记录的FirstName 和LastName，使用GridView 作为其视图，FirstName 和LastName 作为列，但我不知道该怎么做。
这是当前显示的图像：
这里有一些示例代码来说明我的意思。
public class Record
{
public string School { get; set; }
public string Subject { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
}
后面的代码：
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
var records = new Record[]
{
new Record() { School = "School A", Subject = "Maths" , FirstName = "Fred" , LastName = "Blogs"},
new Record() { School = "School A", Subject = "English" , FirstName = "Alice" , LastName = "Lane"},
new Record() { School = "School B", Subject = "Geography" , FirstName = "John" , LastName = "Smith"},
new Record() { School = "School B", Subject = "Geography" , FirstName = "Burt" , LastName = "Lancaster"},
new Record() { School = "School C", Subject = "Chemistry" , FirstName = "Dee" , LastName = "Kaye"}
};
this.DataContext = records;
}
}
XAML：
<Window x:Class="ListViewInTreeView.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:ListViewInTreeView"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<CollectionViewSource x:Key="listings"
Source="{Binding .}">
<CollectionViewSource.GroupDescriptions>
<PropertyGroupDescription PropertyName="School" />
<PropertyGroupDescription PropertyName="Subject" />
</CollectionViewSource.GroupDescriptions>
</CollectionViewSource>
</Window.Resources>
<Grid>
<TreeView Grid.Row="4" DataContext="{StaticResource listings}" ItemsSource="{Binding}" >
<TreeView.GroupStyle>
<GroupStyle>
<GroupStyle.ContainerStyle>
<Style TargetType="{x:Type GroupItem}">
<Setter Property="Margin" Value="0,0,0,5"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type GroupItem}">
<Expander Margin="0,0,0,0" IsExpanded="True" BorderBrush="#FFA4B97F"
BorderThickness="0,0,0,1">
<Expander.Header>
<DockPanel>
<TextBlock FontWeight="Bold" Text="{Binding Path=Name}"/>
<TextBlock Text=" : "/>
<TextBlock FontWeight="Bold" Text="{Binding Path=ItemCount}"/>
<TextBlock Text=" items(s)"/>
</DockPanel>
</Expander.Header>
<Expander.Content>
<ItemsPresenter Margin="20,0,0,0" />
</Expander.Content>
</Expander>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</GroupStyle.ContainerStyle>
</GroupStyle>
</TreeView.GroupStyle>
<TreeView.Resources>
<!-- NEED HELP HERE I THINK ?-->
<HierarchicalDataTemplate DataType="{x:Type GroupItem}">
<ListView ItemsSource="{Binding .}">
<ListView.View>
<GridView>
<GridViewColumn Header="First Name" DisplayMemberBinding="{Binding FirstName}"/>
<GridViewColumn Header="Last Name" DisplayMemberBinding="{Binding LastName}"/>
</GridView>
</ListView.View>
</ListView>
</HierarchicalDataTemplate>
</TreeView.Resources>
</TreeView>
</Grid>
</Window>
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