Whats the best way to do throbber in C#?

Specifically what I am looking to do is make the icons for the Nodes in my System.Windows.Forms.TreeView control to throb while a long loading operation is taking place.

From stackoverflow garretmagin

• If you load each frame into an ImageList, you can use a loop to update to each frame. Example:

      bool runThrobber = true;
      private void AnimateThrobber(TreeNode animatedNode)
      {
          BackgroundWorker bg = new BackgroundWorker();
          bg.DoWork += new DoWorkEventHandler(delegate
          {
              while (runThrobber)
              {
                  this.Invoke((MethodInvoker)delegate
                  {
                      animatedNode.SelectedImageIndex++;
                      if (animatedNode.SelectedImageIndex >= imageList1.Images.Count) > animatedNode.SelectedImageIndex = 0;
                  });
                  Thread.Sleep(100);
              }
          });
          bg.RunWorkerAsync();
      }
  

  Obviously there's more than a few ways to implement this, but here's the basic idea.

  Factor Mystic : Looking at this again, you should really check and see if the image index is in the bounds of the imagelist.images count before you increment it.
  From Factor Mystic