TreeNode Constructor

TreeNode Constructor ()


Initializes a new instance of the TreeNode class.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public TreeNode()

The following code example creates a root tree node to assign child tree nodes to. A child tree node for each Customer object in an ArrayList is added to the root tree node as well as a child tree node for each Order object assigned to the Customer object. The Customer object is assigned to the Tag property, and the tree nodes representing Customer objects are displayed with Orange text. This example requires that you have a Customer and Order object defined, a TreeView control on a Form, and an ArrayList named customerArray that contains Customer objects.

public class Customer
   public ArrayList CustomerOrders;
   public string CustomerName;
   public Customer(string myName)
      CustomerName = myName;
      CustomerOrders = new ArrayList(); 
public class Order
   public string OrderID;
   public Order(string myOrderID )
      this.OrderID = myOrderID;

public void AddRootNodes()
   // Add a root node to assign the customer nodes to.
   TreeNode rootNode = new TreeNode();
   rootNode.Text = "CustomerList";
   // Add a main root treenode.

   // Add a root treenode for each 'Customer' object in the ArrayList.
   foreach(Customer myCustomer in customerArray)
      // Add a child treenode for each Order object.
      int i = 0;
      TreeNode[] myTreeNodeArray = new TreeNode[5];
      foreach(Order myOrder in myCustomer.CustomerOrders)
         myTreeNodeArray[i] = new TreeNode(myOrder.OrderID);
      TreeNode customerNode = new TreeNode(myCustomer.CustomerName,
		// Display the customer names with and Orange font.
		customerNode.ForeColor = Color.Orange;
		// Store the Customer object in the Tag property of the TreeNode.
		customerNode.Tag = myCustomer;

.NET Framework
Available since 1.1
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