public void btnReplacedSaved_click(object sender, EventArgs e)
        {
            //TreeNode foundNode = (TreeNode)saveList.Find(myTree.findNode(int.Parse(txtKey.Text)));
            TreeNode foundNode = myTree.findNode(int.Parse(txtKey.Text));

            DisplayAlert("replaced", saveList.getData().ToString() + " with " + foundNode.ToString(), "OK");
            saveList.editCurrent(foundNode);
            lblSaveList.Text = saveList.getData().ToString();
        }