Open.Core.TreeNode.GetRoot C# (CSharp) Method

        private ITreeNode GetRoot()
        {
            if (IsRoot) return null;
            ITreeNode parentNode = Parent;
            do
            {
                if (parentNode == null) break;
                if (parentNode.IsRoot) return parentNode;
                parentNode = parentNode.Parent;
            } while (parentNode != null);
            return null;
        }