System.Environment.GetKnownFolderPath C# (CSharp) Method

        private static string GetKnownFolderPath(string folderGuid, SpecialFolderOption option)
        {
            Guid folderId = new Guid(folderGuid);

            string path;
            int hr = Interop.Shell32.SHGetKnownFolderPath(folderId, (uint)option, IntPtr.Zero, out path);
            if (hr != 0) // Not S_OK
            {
                if (hr == Interop.Shell32.COR_E_PLATFORMNOTSUPPORTED)
                {
                    throw new PlatformNotSupportedException();
                }
                else
                {
                    return string.Empty;
                }
            }

            return path;
        }