Jabber-Net: Get user's JID in a RosterTree

Question

Hi, how do I get the user's JID in a RosterTree? I can get the clicked user's node with NodeMouseDoubleClick but i don't know how to get his JID.

Private Sub RosterTree_NodeMouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles RosterTree.NodeMouseDoubleClick
    If e.Node.GetType().ToString = "muzzle.RosterTree+ItemNode" Then
        'Code
    End If
End Sub

Thank you.

UPDATE:

Solved with a type cast (Node to ItemNode):

Private Sub RosterTree_NodeMouseDoubleClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles RosterTree.NodeMouseDoubleClick
    If e.Node.GetType().ToString = "muzzle.RosterTree+ItemNode" Then
        Dim rosterNode As RosterTree.ItemNode = CType(e.Node, RosterTree.ItemNode)
        FormMessage.JID = rosterNode.JID
        FormMessage.Show()
    End If
End Sub

Thank you again.