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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);
}