You can use this code
Page _page = this.Context.CurrentHandler as Page;
in order to get reference to the Page
object that contains the user control that contains the RadFileExplorer
. Then you can find the user control and get the values from that page. For example you can use a hidden field. The rest of the implementation, however, is a comm programming task and you need to implement it yourself.
Additionally, I recommend you check this
code library as well.
I hope this helps.
All the best,
the Telerik team