Hi Mohamed,
Thank you for writing.
RadTreeNode does not have an Attributes property/collection. If you share with me what you want to use it for, I will try to provide you with a suggestion for your case.
I am looking forward to your reply.
P.S. FYI the other thread which you have opened regarding the same case ("
how i add attribute to node ?") was deleted due to duplicity.
Regards,
Stefan
Telerik