避免为每个转发器重新加载所有XML数据 - vb.net

I am trying to place a repeater within a repeater using xml data. I have it working exactly as I want, but the method I have used reloads the data for each repeater. I think I need to cast as an XmlNode but I'll be honest - I have no idea where to start.I am trying to place a repeater within a repeat