Hi David ,
The required functionality is not supported by RadFileExplorer out-of-the-box.
Hiding folders from the TreeView only can be achieved using the above mentioned approach (hiding the items during the ExplorerPopulated event of RadFileExplorer.
However, the hidden folders will not be accessible because of how RadFileExplorer is designed. The logic behind the RadFileExplorer control, however, expects to find a folder (with the same path as shown in the Grid) in the TreeView. Such a folder, however, does not exists and this is why the operation is aborted .You can override this behavior by overriding a method in the RadFileExplorer's client-side API:
You can add this code to the page that hosts RadFileExplorer and then you will be able to open the folder. Please note that, however,
_gridOpenFolder
is a private method and such an override is not a safe operation because we can change its behavior in further releases. This is why, I do not recommend you to do this.
Kind regards,
Dobromir
the Telerik team