RadFileExplorer is using the RadTreeView control to provide this functionality. Unfortunately, the tree nodes in RadFileExplorer are nodes with a template and such nodes cannot be moved client side. That is why we suggest such manipulations to be done in the content provider.
In addition, you can get reference to the RadTreeView client object using the RadFileExplorer's get_tree()
client-side method. After that, you can access the RadTreeView's TreeNodeCollection
and modify the nodes' order.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.