TFS API: Creating recursive TFS areas

The following code has been founded at Shai Raiten's blog:

TFS API Part 9: Get Area/Iteration Programmatically

TFS API Part 11: Get Area/Iteration Security Settings Using IAuthorizationService

He created a fantastic serie how to work with the API!!!
Thanks Shai

Simple Call:
NodeInfo nodeInfo = this.GetAddNode("\\new area name1", "YourProject", StructureType.Area);
NodeInfo nodeInfo = this.GetAddNode("\\new area name2", "YourProject", StructureType.Area);

Recursive Calls:
NodeInfo nodeInfo = this.GetAddNode("\\new area name\\area 1", "YourProject", StructureType.Area);
NodeInfo nodeInfo = this.GetAddNode("\\new area name\\area 2", "YourProject", StructureType.Area);

    public enum StructureType
    {
      Iteration = 0,
      Area = 1
    }

    private NodeInfo GetAddNode(string ElementPath, string projectName, StructureType nodeType)
    {
      NodeInfo retVal;
      string rootNodePath = "\\" + projectName + "\\" + nodeType.ToString();

      //Check if this path already exsist
      string newPath = rootNodePath + ElementPath;
      try
      {
        retVal = css.GetNodeFromPath(newPath);
        if (retVal != null)
        {
          // return existing node
          return retVal;          
        }
      }
      catch (Exception ex)
      {
        if (ex.Message.Contains("The following node does not exist"))
        {
          //just means that this path is not exist and we can continue.
        }
        else
        {
          throw ex;
        }
      }

      int BackSlashIndex = ElementPath.LastIndexOf("\\");
      string Newpathname = ElementPath.Substring(BackSlashIndex + 1);
      string NewPath = (BackSlashIndex == 0 ? string.Empty : ElementPath.Substring(0, BackSlashIndex));
      string PathRoot = rootNodePath + NewPath;
      NodeInfo previousPath = null;
      try
      {
        previousPath = css.GetNodeFromPath(PathRoot);
      }
      catch (Exception ex)
      {
        // had to update the string from shai's original code
        if (ex.Message.Contains("TF200014: The following node does not exist:"))
        {
          //just means that this path is not exist and we can continue.
          previousPath = null;
        }
        else
        {
          throw ex;
        }
      }
      if (previousPath == null)
      {
        //call this method to create the parent paths.
        previousPath = GetAddNode(NewPath, projectName, nodeType);
      }
      
      string newPathUri = css.CreateNode(Newpathname, previousPath.Uri);
      NodeInfo ni = css.GetNode(newPathUri);

      Console.WriteLine("Creating Area: " + ni.Path.ToString());
      return ni;
    }