Sorry try this one:

IF VARTYPE(This.Nodes[SelectedKey]) = 'O'
   This.SelectedItem = This.Nodes[SelectedKey]
ENDIF

>I have a method that rebuilds all the nodes in a treeview.
>
>I save the currently selected node with:
>

SelectedKey = This.SelectedItem.Key

>
>Then I clear all the nodes and rebuild the tree.
>
>Then I want to reselect the Selected item with:
>

This.SelectedItem = This.Nodes[SelectedKey]
>This.SelectedItem.ensurevisible

>
>However sometimes the SelectedKey doesn't exist once the tree is rebuilt. Is there an easy way to determine that? I can't spin through all the keys because I build each branch dynamically as it is expanded. The only thing I've can think of is setting it, catching the error if it doesn't exist, and going on from there.
>
>tia