Question

我需要将选定的treeview项（实际上是数据源）绑定到datagrid。

F.ex。我有收据清单，在一张收据下有收据项目清单。当从treeview中选择收据时，我想将这些项绑定到datagrid。

在datagrid中，将对子项进行编辑，因此值应绑定到实际数据源。

怎么做？

Answer 1

将DataGrids的ItemsSource绑定到树中选定的Receipt：

  <TreeView x:Name="ReceiptsTree" ItemsSource="{Binding Receipts}"/>


  <DataGrid AutoGenerateColumns="False" ItemsSource="{Binding ElementName=ReceiptsTree, Path=SelectedItem.ReceiptItems}">
    <DataGrid.Columns>
      <DataGridTextColumn Header="Receipt Name" Binding="{Binding Name}" />
      .... 
    </DataGrid.Columns>
  </DataGrid>

Answer 2

这个例子完全是在裸体本质中（根据DataGrid的SvenG的一些帮助）。

Window.xaml：

<Window x:Class="WpfSOTreeviewSelectedItem.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>
        <TreeView Name="tvReceipts" Grid.Column="0">
            <TreeView.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Path=Name}"></TextBlock>
                </DataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>
        <DataGrid AutoGenerateColumns="False" Grid.Column="1" ItemsSource="{Binding ElementName=tvReceipts, Path=SelectedItem.Items}">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Ingredient" Binding="{Binding Name}" />
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Window>

MainWindow背后的代码：

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        List<Receipt> list = new List<Receipt>();

        Receipt r;
        r = new Receipt() { Name = "Pizza" };
        list.Add(r);

        ReceiptItem ri;
        ri = new ReceiptItem() { Name = "Tomatoes" };
        r.Items.Add(ri);
        ri = new ReceiptItem() { Name = "Herbs" };
        r.Items.Add(ri);

        r = new Receipt() { Name = "Tortellini" };
        list.Add(r);
        ri = new ReceiptItem() { Name = "Flower" };
        r.Items.Add(ri);
        ri = new ReceiptItem() { Name = "Meat" };
        r.Items.Add(ri);

        r = new Receipt() { Name = "Tarte Tatin" };
        list.Add(r);
        ri = new ReceiptItem() { Name = "Apples" };
        r.Items.Add(ri);
        ri = new ReceiptItem() { Name = "Raisins" };
        r.Items.Add(ri);

        tvReceipts.ItemsSource = list;
    }
}

public class Receipt
{
    private String _name;
    public String Name
    {
        get { return _name; }
        set { _name = value; }
    }

    private List<ReceiptItem> _items = new List<ReceiptItem>();
    public List<ReceiptItem> Items
    {
        get { return _items; }
        set { _items = value; }
    }
}

public class ReceiptItem
{
    private String _name;
    public String Name
    {
        get { return _name; }
        set { _name = value; }
    }
}

如何通过DataSource将Treeview的SelectedItem绑定到Datagrid

2 个答案: