Treenode convert Microsoft.Web.UI.WebControls to System.Web.UI.WebControls

Question

I'm trying to convert treeview that uses the older htc tag< iewc:treeview> to use the newer asp treeview tag < asp:TreeView >. I noticed that the treeview object is different as in the older code uses the import Microsoft.Web.UI.WebControls compared to the newer code System.Web.UI.WebControls. Can someone point me in the right direction of converting these data types easily?

To provide a example where I'm having trouble, the old treenode has members which are not found in the newer treenode . For example I can't seem to find the equilavilant for the member NodeData

     myTreeNode.NodeData = "test string"

in the treeNode found in System.Web.UI.WebControls.

This is the link I used for reference for the System.Web.UI.WebControls treeNode https://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.treenode(v=vs.100).aspx

However I can't find one for Microsoft.Web.UI.WebControls.