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TreeNodeBindingCollection.CopyTo Method (TreeNodeBinding[], Int32)

Copies all the items from the TreeNodeBindingCollection object to a compatible one-dimensional array of TreeNodeBinding objects, starting at the specified index in the target array.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

public void CopyTo(
	TreeNodeBinding[] bindingArray,
	int index


Type: System.Web.UI.WebControls.TreeNodeBinding[]

A zero-based array of TreeNodeBinding objects that receives the copied items from the TreeNodeBindingCollection.

Type: System.Int32

The position in bindingArray at which to start receiving the copied content.

Use the CopyTo method to copy the contents of the TreeNodeBindingCollection object into bindingArray. Items are copied starting at index. You can then use the array to access the items that are in the collection.

As an alternative, you can use the GetEnumerator method to create an enumerator that can be used to access the items in the collection.

The following code example demonstrates how to use the CopyTo method to copy the contents of the DataBindings collection to an array.

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
<script runat="server">

  void Page_Load(Object sender, EventArgs e)

    // Create an array of TreeNodeBinding objects and then use the
    // CopyTo method to copy the contents of the DataBindings collection
    // to the array.
    TreeNodeBinding[] bindings = new TreeNodeBinding[BookTreeView.DataBindings.Count];
    BookTreeView.DataBindings.CopyTo(bindings, 0);

    // Iterate through the array and display the value of the text field
    // property of each TreeNodeBinding object.
    MessageLabel.Text = "The field names for each node level are: <br/>";

    foreach (TreeNodeBinding binding in bindings)

      MessageLabel.Text += binding.TextField + "<br/>";




<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>TreeNodeBindingCollection CopyTo Example</title>
    <form id="form1" runat="server">

      <h3>TreeNodeBindingCollection CopyTo Example</h3>

      <asp:TreeView id="BookTreeView" 

          <asp:TreeNodeBinding DataMember="Book" 
          <asp:TreeNodeBinding DataMember="Chapter" 
          <asp:TreeNodeBinding DataMember="Section" 


      <asp:XmlDataSource id="BookXmlDataSource"  


      <asp:Label id="MessageLabel" runat="server"/>


.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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