how to get all subfolders list from the share section of dropbox?

Hi Greg,

Thanks for your quick response.

Yes, it's a working solution, but somehow I am not able to use it because of my flow,

1)I need to Show all shared folder first like a dashboard. that's what I have done using Sharing.ListFoldersAsync().

2) The user should enter any folder nested behavior of folders that can be there,  along with a back button to come back from each. so I achieve this by given the solution above. but the problem is that in my scenario, I need to store back Path in a back button so user can go back after clicking on it. all goes well but what goes wrong when I am on the last but one subfolder from the dashboard and click back button then it is not going to dashboard, it's showing the same folder items. and having some existing code structure limitations here so I used below way to do the same.

var mount = await DropboxClient.Sharing.MountFolderAsync(SharedFolderId);
var FolderList= await DropboxClient.Files.ListFolderAsync(path: item.PathLower);

It's giving me the expected result that suitable to my existing code scenario,  that I mount a shared folder first then use  DropboxClient.Files.ListFolderAsync(path). but some times facing an issue that "Already mounted" error.  Is there any way to check first that the folder is mounted or not?