[WPF](小结2)DataGrid嵌套DataGrid(也叫主从表)

usingSystem;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Windows;
usingSystem.Windows.Controls;
usingSystem.Windows.Data;
usingSystem.Windows.Documents;
usingSystem.Windows.Input;
usingSystem.Windows.Media;
usingSystem.Windows.Media.Imaging;
usingSystem.Windows.Navigation;
usingSystem.Windows.Shapes;
using System.Collections .ObjectModel ;//ObservableCollection命名空间
namespaceDataGridInDataGrid
{
    /// <summary>
    ///MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial classMainWindow : Window
    {
        publicMainWindow()
        {
            InitializeComponent();
        }
                //题目类
        classquestion
        {
            public Int32 questionID//题目ID号
            { get; set; }
            public string questionName//题目名,比如:第1题或第2题等
            { get; set; }
            public ObservableCollection<choseItem> choseItems//某题中"选项类"的集合,比如A-D
            { get; set; }
            public question(Int32 _id, string _questionname, ObservableCollection<choseItem> _choseitems)//构造函数
{
                questionID =_id ;
                questionName =_questionname;
                choseItems =_choseitems;
            }
        }
        //选项类
        classchoseItem
        {
            public string ChoseName//选项名,比如:A,B,C,D之类
            { get; set; }
            public string ChoseContent//选项内容
            { get; set; }
        }
        ObservableCollection<question> Questions = new ObservableCollection<question>();//题目数组
        private void Window_Loaded(objectsender, RoutedEventArgs e)
        {
                    string[] CharStr = new string[4] { "A", "B", "C", "D"};
            for (int i = 0; i < 5; i++)
            {
                ObservableCollection<choseItem> ChoseItems = new ObservableCollection<choseItem>();//选项数组               
                for (int j = 0; j < 4; j++)
                {
                    choseItem item = new choseItem();//选项类
                    item.ChoseName = CharStr[j] + ":";
                    item.ChoseContent = "选项内容举例...";
                    ChoseItems.Add(item);
                }
                Questions.Add(new question(i,"__第" + (i + 1).ToString() + "题", ChoseItems));
            }
            datagrid1.ItemsSource =Questions;
        }
    }
}

<Window x:Class="DataGridInDataGrid.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"Title="DataGridInDataGrid" Height="350" Width="525" Loaded="Window_Loaded">
    <Grid>
        <DataGrid AutoGenerateColumns="False" Name="datagrid1">
            <DataGrid.Columns>
                <DataGridTextColumn Header="ID值" IsReadOnly="True" Width="auto" Binding="{Binding questionID}" />
                <DataGridTextColumn Header="题目" IsReadOnly="True" Width="auto" Binding="{Binding questionName}" />
            </DataGrid.Columns>
            <DataGrid.RowDetailsTemplate >
                <DataTemplate >
                    <DataGrid ItemsSource="{Binding choseItems}" AutoGenerateColumns="False"Margin="30,20,0,20"  Background="Green">
                        <DataGrid.Columns>
                            <DataGridTextColumn Header="选项名" Binding="{Binding ChoseName}" />
                            <DataGridTextColumn Header="选项内容举例" Binding="{Binding ChoseContent}"/>
                        </DataGrid.Columns>
                    </DataGrid>                    
                </DataTemplate>
            </DataGrid.RowDetailsTemplate>
        </DataGrid>
    </Grid>
</Window>