RadTreeNodeCollection

The table below lists the most important functions of the client-side RadTreeNodeCollection object. The RadTreeNodeCollection object can be accessed using the RadTreeView get_nodes() function.

Name	Parameters	Return Type	Description
add	RadTreeNode	none	Adds a child Node to the Nodes collection of a Node. (see Example 1)
insert	int, RadTreeNode	none	Inserts a Node at the position defined by the first (index) parameter. The Node is inserted in the Nodes collection of a Node. (see Example 2)
remove	RadTreeNode	none	Removes a child Node from the Nodes collection of a Node. (see Example 3)
removeAt	int	none	Removes the Node at the specified index. (see Example 4)
clear	none	none	Removes all Nodes from a Node collection. (see Example 5)
getNode	int	RadTreeNode	Gets the Node from the Nodes collection residing at the index defined by the parameter passed to the function. (see Example 6)
indexOf	RadTreeNode	int	Gets the position of the Node within the Nodes collection. (see Example 6)
get_count	none	int	Gets the count of the Nodes in the Nodes collection of a Node. (see Example 7)

Example 1: Demonstrates the usage of the add method

function AddNode() {
    var tree = $find("<%= RadTreeView1.ClientID %>");
    tree.trackChanges();
    var node = new Telerik.Web.UI.RadTreeNode();
    node.set_text("New Node");
    tree.get_nodes().add(node);
    tree.commitChanges();
}       

Example 2: Demonstrates the usage of the insert method

function InsertNode() {
    var tree = $find("<%= RadTreeView1.ClientID %>");
    tree.trackChanges();
    var node = new Telerik.Web.UI.RadTreeNode();
    node.set_text("New Node");
    tree.get_nodes().insert(0, node);
    tree.commitChanges();
}       

Example 3: Demonstrates the usage of the remove method

function RemoveNode() {
    var tree = $find("<%= RadTreeView1.ClientID %>");
    var node = tree.findNodeByText("New Node");
    tree.trackChanges();
    node.get_parent().get_nodes().remove(node);
    tree.commitChanges();
}       

Example 4: Demonstrates the usage of the removeAt method

function RemoveNode() {
    var tree = $find("<%= RadTreeView1.ClientID %>");
    var node = tree.findNodeByText("New Node");
    tree.trackChanges();
    node.get_parent().get_nodes().removeAt(0);
    tree.commitChanges();
}       

Example 5: Demonstrates the usage of the clear method

function RemoveNode() {
    var tree = $find("<%= RadTreeView1.ClientID %>");
    var node = tree.findNodeByText("New Node");
    tree.trackChanges();
    node.get_parent().get_nodes().clear();
    tree.commitChanges();
}       

Example 6: Demonstrates the usage of the getNode method

function GetNode() {
    var tree = $find("<%= RadTreeView1.ClientID %>");
    var node = tree.get_nodes().getNode(0);
    node.set_text("My Text");
}   

Example 6: Demonstrates the usage of the indexOf method

function IndexOf() {
    var tree = $find("<%= RadTreeView1.ClientID %>");
    var node = tree.get_nodes().getNode(0);
    var index = tree.get_nodes().indexOf(node);
    node.set_text("index: " + index);
}       

Example 7: Demonstrates the usage of the get_count method

function GetCount() {
    var tree = $find("<%= RadTreeView1.ClientID %>");
    var node = tree.get_nodes().getNode(0);
    var count = node.get_nodes().get_count();
    node.set_text("Count: " + count);
}