TreeNodeBindingCollection.Insert Method (Int32, TreeNodeBinding)
Inserts the specified TreeNodeBinding object into the TreeNodeBindingCollection object at the specified index location.
Assembly: System.Web (in System.Web.dll)
Parameters
- index
-
Type:
System.Int32
The zero-based index location at which to insert the TreeNodeBinding.
- binding
-
Type:
System.Web.UI.WebControls.TreeNodeBinding
The TreeNodeBinding to insert.
Use the Insert method to insert the specified TreeNodeBinding object into the TreeNodeBindingCollection object at index.
As an alternative, you can append a TreeNodeBinding object to the end of the TreeNodeBindingCollection using the Add method.
The following code example demonstrates how to use the Insert method to insert a new TreeNodeBinding object programmatically into a TreeNodeBindingCollection object. 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="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> void Page_Load(Object sender, EventArgs e) { // Use the RemoveAt method to remove the TreeNodeBinding object // for the third-level nodes (index 2). BookTreeView.DataBindings.RemoveAt(2); // Create a new TreeNodeBinding object and set its properties. TreeNodeBinding newBinding = new TreeNodeBinding(); newBinding.DataMember = "Section"; newBinding.TextField = "Subject"; // Use the Insert method to insert the TreeNodeBinding object // into the DaaBindings collection at index 2. BookTreeView.DataBindings.Insert(2, newBinding); } </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>TreeNodeBindingCollection Insert and RemoveAt Example</title> </head> <body> <form id="form1" runat="server"> <h3>TreeNodeBindingCollection Insert and RemoveAt 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