I'm implementing a search and I would like to go through and "highlight" where that search word appears.  I'm fine with just changing the color or bolden the searched text but I can't figure out how to do this.  I found another thread where you talked about this but it was in relation to a grid and wasn't sure if there is something different that I have to do for a tree.  I tried using span tags but they show up in the node's text, instead of being implemented as a tag. Here is what I have:

 //Highlight the search term in each node
            foreach (UltraTreeNode node in this.ultraTree1.Nodes)
            {
                string replacement = String.Format("<span style=\"background-color:Yellow;\">{0}</span>", searchText);
                string val = node.Text.ToString();
                val = val.Replace(searchText, replacement);
                node.Text = val;
            }