C# Treeview checking if node exists

Question

I\'m trying to populate a treeview from an XmlDocument. The Root of the tree is set as \'Scripts\' and from the root the next level should be \'Departments\' which is within the

Answer 1

if(treeView1.Nodes.ContainsKey("DEPARTMENT")){
//...
}

EDIT: Recursive method:

 bool exists = false;
        foreach (TreeNode node in treeView1.Nodes) {
            if (NodeExists(node, "DEPARTMENT"))
                exists = true;
        }
    private bool NodeExists(TreeNode node, string key) {
        foreach (TreeNode subNode in node.Nodes) {
            if (subNode.Text == key) {
                return true;
            }
            if (node.Nodes.Count > 0) {
                NodeExists(node, key);
            }
        }
        return false;
    }