Fetch all the folders in OneDrive using Microsoft graph API

Question

I am trying to fetch all the folders in Onedrive(not files) using graph api. I am looking for query similar to the below query:

var folders=await client.Me.Drive.Root.Children.Request().GetAsync();

The above query fetches both files and folders and I am looking for folders only.

Thanks in advance.

Answer 1

To get only the folders in the group there is a property called 'Folder' in every drivenItem object which can be used to detect if that particular drivenItem object is a file or a folder. If that object is Folder then the value in it won't be null. If it is a file then definitely the Folder property is null.

public static async Task<IEnumerable<DriveItem>> GetOnlyFolders()
{
      var folders = await graphClient.Me.Drive.Root.Children
      .Request()
      .GetAsync();

       return folders.CurrentPage;
}
static void OnlyFolders()
{
      var result = GraphHelper.GetOnlyFolders().Result;
      foreach (var item in result)
      {
          if(item.Folder != null)
          {
               Console.WriteLine(item.Name);
          }
      }
}

Tested it in my application and resulted as below.

My OneDrive:- Please click this link to see my one drive

My Application after applying the code:- Please click this link to view the folders