TreeNodeBindingCollection.Item Property (Int32)
Gets or sets the TreeNodeBinding object at the specified index in the TreeNodeBindingCollection object.
Assembly: System.Web (in System.Web.dll)
Parameters
- i
-
Type:
System.Int32
The zero-based index of the TreeNodeBinding to retrieve.
Property Value
Type: System.Web.UI.WebControls.TreeNodeBindingThe TreeNodeBinding at the specified index in the TreeNodeBindingCollection.
Use the Item indexer to access a TreeNodeBinding object from the TreeNodeBindingCollection object located at i using array notation. The Item indexer allows you to modify or replace a TreeNodeBinding object in the collection directly.
The following code example demonstrates how to use the Item indexer to access the items that are in a TreeNodeBindingCollection object. The TreeNodeBinding object for the third-level nodes is updated programmatically with new values. For this example to work correctly, you must copy the XML data that is located at the end of this section to a file called Book.xml.
<%@ Page Language="VB" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) ' Use the indexer to access the TreeNodeBinding object for ' the third-level nodes (index 2) and change the value of ' its TextField property to "Subject". BookTreeView.DataBindings(2).TextField = "Subject" End Sub </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>TreeNodeBindingCollection Indexer Example</title> </head> <body> <form id="form1" runat="server"> <h3>TreeNodeBindingCollection Indexer Example</h3> <asp:TreeView id="BookTreeView" DataSourceID="BookXmlDataSource" runat="server"> <DataBindings> <asp:TreeNodeBinding DataMember="Book" TextField="Title"/> <asp:TreeNodeBinding DataMember="Chapter" TextField="Heading"/> <asp:TreeNodeBinding DataMember="Section" TextField="Heading"/> </DataBindings> </asp:TreeView> <asp:XmlDataSource id="BookXmlDataSource" DataFile="Book.xml" runat="server"> </asp:XmlDataSource> </form> </body> </html>
The following is the XML data for the preceding code example.
<Book Title="Book Title">
<Chapter Heading="Chapter 1">
<Section Heading="Section 1"
Subject="Subject 1">
</Section>
<Section Heading="Section 2"
Subject="Subject 1">
</Section>
</Chapter>
<Chapter Heading="Chapter 2">
<Section Heading="Section 1"
Subject="Subject 1">
</Section>
</Chapter>
</Book>
Available since 2.0