// Show the tree's traversals.
private void ShowTraversals()
{
Traversal = new List <string>();
Root.PreorderTraverse(MakeTraversal);
preorderTextBox.Text = string.Join(", ", Traversal.ToArray());
Traversal = new List <string>();
Root.InorderTraverse(MakeTraversal);
inorderTextBox.Text = string.Join(", ", Traversal.ToArray());
Traversal = new List <string>();
Root.PostorderTraverse(MakeTraversal);
postorderTextBox.Text = string.Join(", ", Traversal.ToArray());
Traversal = new List <string>();
Root.BreadthFirstTraverse(MakeTraversal);
breadthFirstTextBox.Text = string.Join(", ", Traversal.ToArray());
}