Chimney.Shared.UserControls.ChimneyServerUserControl.GetSubDirectories C# (CSharp) Method

        async Task<List<Directory>> GetSubDirectories(Directory directory)
        {
            List<Directory> subdir = new List<Directory>();

            var subDirectories = await Dbconnection.QueryAsync<Directory>("SELECT * FROM Directories WHERE ParentDirectoryId = " + directory.DirectoryId);
            subdir.AddRange(subDirectories);

            foreach (Directory d in subDirectories)
            {
                subdir.AddRange(await GetSubDirectories(d));
            }

            return subdir;
        }