听说WPF支持TreeView的数据绑定,不知哪位做过，能不能举个例子？

Question

听说WPF支持TreeView的数据绑定,不知哪位做过，能不能举个例子？

Answer 1

Northwind数据库的三个表之间依次有一对多关系： 
Customers-Orders-Order Details 要想在TreeView上表现这种关系，就需要HierarchicalDataTemplate. <Grid>   <Grid.Resources>     <DataTemplate x:Key="detailTemplate"> 
      <Grid> 
        <Grid.ColumnDefinitions>   
<ColumnDefinition Width="100" /> 
  <ColumnDefinition Width="100" /> 
  <ColumnDefinition Width="100" /> 
        </Grid.ColumnDefinitions> 
        <TextBlock Grid.Column="0" Text="{Binding UnitPrice}" /> 
        <TextBlock Grid.Column="1" Text="{Binding Quantity}" /> 
        <TextBlock Grid.Column="2" Text="{Binding Discount}" /> 
      </Grid> 
    </DataTemplate>     <HierarchicalDataTemplate x:Key="orderTemplate" ItemsSource="{Binding Orders2OrderDetails}" ItemTemplate ="{StaticResource detailTemplate}"> 
    <Grid> 
      <Grid.ColumnDefinitions> 
        <ColumnDefinition Width="100"></ColumnDefinition> 
        <ColumnDefinition Width="150"></ColumnDefinition> 
        <ColumnDefinition Width="150"></ColumnDefinition> 
        <ColumnDefinition Width="150"></ColumnDefinition> 
        <ColumnDefinition Width="100"></ColumnDefinition> 
      </Grid.ColumnDefinitions> 
      <TextBlock Grid.Column="0" Text="{Binding Path=OrderID}" /> 
      <TextBlock Grid.Column="1" Text="{Binding Path=OrderDate}" /> 
      <TextBlock Grid.Column="2" Text="{Binding Path=RequiredDate}" /> 
      <TextBlock Grid.Column="3" Text="{Binding Path=ShippedDate}" /> 
      <TextBlock Grid.Column="4" Text="{Binding Path=Freight}" /> 
    </Grid> 
  </HierarchicalDataTemplate>   <HierarchicalDataTemplate x:Key="treeTemplate" ItemsSource="{Binding Customers2Orders}" ItemTemplate="{StaticResource orderTemplate}"> 
    <TextBlock Text="{Binding CompanyName}" /> 
  </HierarchicalDataTemplate> 
</Grid.Resources> <TreeView Grid.Column="0" Name="myTreeView" ItemsSource="{Binding}" ItemTemplate="{StaticResource treeTemplate}"> 
</TreeView> 
</Grid> //读取数据库的.cs代码:
public partial class Window1 : System.Windows.Window 
 { 
 public DataSet ds; 
 public Window1() 
 { 
 InitializeComponent();  ds = new DataSet();   SqlConnection conn = new SqlConnection(); 
 conn.ConnectionString = "server=(local);database=northwind;uid=sa;pwd=";  SqlCommand cmd = new SqlCommand(); 
 cmd.Connection = conn; 
  
 // Load Customers  
 SqlDataAdapter daCustomers = new SqlDataAdapter("select * from Customers",conn);  
 daCustomers.Fill(ds, "Customers");  // Load Orders 
 SqlDataAdapter daOrders = new SqlDataAdapter("select * from Orders", conn); 
 daOrders.Fill(ds, "Orders"); 
 // Load OrderDetails 
 SqlDataAdapter daOrderDetails = new SqlDataAdapter("select * from [Order Details]", conn); 
 daOrderDetails.Fill(ds, "OrderDetails");    ds.Relations.Add("Customers2Orders", ds.Tables["Customers"].Columns["CustomerID"], ds.Tables["Orders"].Columns["CustomerID"]); 
 ds.Relations.Add("Orders2OrderDetails", ds.Tables["Orders"].Columns["OrderID"], ds.Tables["OrderDetails"].Columns["OrderID"]);  myTreeView.DataContext = ds.Tables["Customers"];  }