C# add XMLNode to XMLNodeList

This one I thought would be simple, but i really just have 1 node I need to add to a node List.

So I have XmlNode xmlNode. This node has all the information I need in it. I need to add this to XmlNodeList xmlnodeList. I know this is dumb because it's not a list, but the following code has all the parts to handle a node list and would be a pain to unwind.

Also normally I would use XmlNodeList xmlnodeList = xmlNode.FirstChild.SelectNodes however i need this entire node, not just the childnodes.

Thanks!