WebDataTree是包含在infragistics ASP.NET里面的一个树型控件，可以绑定多层数据源以及XML数据源，数据绑定也可以设计时绑定和代码绑定，这里主要介绍如何快速通过代码绑定XML数据源到WebDataTree

1.创建一个ASP.NET页面，然后从Visual Studio工具箱里拖拽ScriptManager控件到WEB 页面
2. 拖拽WebDataTree控件到Web页面
3.创建一个Orders.xml文件，并把下面的代码复制到XML里

<?xml version="1.0" encoding="utf-8" ?>
<Customers>
 
  <Customer CustomerID="ALFKI" CustomerName="Alfreds Futterkiste">
    <Order OrderID="1024">
      <OrderDetail ProductID="1" ProductName="Chocolate" Quantity="10" />
      <OrderDetail ProductID="2" ProductName="Apples" Quantity="20" />
      <OrderDetail ProductID="3" ProductName="Peanuts" Quantity="30" />
    </Order>
    <Order OrderID="1029">
      <OrderDetail ProductID="10" ProductName="Flour" Quantity="100" />
    </Order>
  </Customer>

  <Customer CustomerID="BLONP" CustomerName="Blondel père et fils">
    <Order OrderID="2021">
      <OrderDetail ProductID="4" ProductName="Rigatoni" Quantity="30" />
      <OrderDetail ProductID="5" ProductName="Ricotta" Quantity="10" />
    </Order>
  </Customer>

  <Customer CustomerID="WOLZA" CustomerName="Wolski Zajazd">
    <Order OrderID="2029">
      <OrderDetail ProductID="6" ProductName="Hot Dogs" Quantity="45" />
      <OrderDetail ProductID="7" ProductName="Brown Rice" Quantity="12" />
      <OrderDetail ProductID="8" ProductName="Ketchup" Quantity="100" />
      <OrderDetail ProductID="9" ProductName="Mustard" Quantity="100" />
    </Order>
  </Customer>
 
</Customers>

4.在page_load事件里添加如下代码
//Create a new XmlDataSource
        XmlDataSource xmlDataSource1 = new XmlDataSource();
        //Give the path where the file is located
        xmlDataSource1.DataFile = "~/Orders.Xml";
        WebDataTree1.DataSourceID = "xmlDataSource1";
       
        //Create Customer data binding
        DataTreeNodeBinding customer = new DataTreeNodeBinding();
        customer.DataMember = "Customer";
        customer.TextField = "CustomerName";
        customer.ValueField = "CustomerID";
                      
      
        //Create Order data binding
        DataTreeNodeBinding orders = new DataTreeNodeBinding();
        orders.DataMember = "Order";
        orders.TextField = "OrderID";
        orders.ValueField = "OrderID";

        //Create OrderDetails data binding 
        DataTreeNodeBinding orderDetails = new DataTreeNodeBinding();
        orderDetails.DataMember = "OrderDetail";
        orderDetails.TextField = "ProductName";
        orderDetails.ValueField = "ProductID";

        //Add the data bindings to the WebDataTree
        WebDataTree1.DataBindings.Add(customer);
        WebDataTree1.DataBindings.Add(orders);
        WebDataTree1.DataBindings.Add(orderDetails);

        //Bind the data to the tree.
        //Make sure you call the DataBind method after creating and adding the data bindings.
        WebDataTree1.DataBind();