How to get the actual (localized) folder names? [duplicate]

You can get the localized display name with the SHGetFileInfo API:

    public  static string GetDisplayName(Environment.SpecialFolder specialFolder)
    {
        IntPtr pidl = IntPtr.Zero;
        try
        {
            HResult hr = SHGetFolderLocation(IntPtr.Zero, (int) specialFolder, IntPtr.Zero, 0, out pidl);
            if (hr.IsFailure)
                return null;

            SHFILEINFO shfi;
            if (0 != SHGetFileInfo(
                        pidl,
                        FILE_ATTRIBUTE_NORMAL,
                        out shfi,
                        (uint)Marshal.SizeOf(typeof(SHFILEINFO)),
                        SHGFI_PIDL | SHGFI_DISPLAYNAME))
            {
                return shfi.szDisplayName;
            }
            return null;
        }
        finally
        {
            if (pidl != IntPtr.Zero)
                ILFree(pidl);
        }
    }

    public static string GetDisplayName(string path)
    {
        SHFILEINFO shfi;
        if (0 != SHGetFileInfo(
                    path,
                    FILE_ATTRIBUTE_NORMAL,
                    out shfi,
                    (uint)Marshal.SizeOf(typeof(SHFILEINFO)),
                    SHGFI_DISPLAYNAME))
        {
            return shfi.szDisplayName;
        }
        return null;
    }

    private const uint FILE_ATTRIBUTE_NORMAL = 0x00000080;
    private const uint SHGFI_DISPLAYNAME = 0x000000200;     // get display name
    private const uint SHGFI_PIDL = 0x000000008;     // pszPath is a pidl

    [DllImport("shell32")]
    private static extern int SHGetFileInfo(IntPtr pidl, uint dwFileAttributes, out SHFILEINFO psfi, uint cbFileInfo, uint flags);
    [DllImport("shell32")]
    private static extern HResult SHGetFolderLocation(IntPtr hwnd, int nFolder, IntPtr token, int dwReserved, out IntPtr pidl);
    [DllImport("shell32")]
    private static extern void ILFree(IntPtr pidl);

    [StructLayout(LayoutKind.Sequential, CharSet=CharSet.Auto)]
    private struct SHFILEINFO
    {
        public IntPtr hIcon;
        public int iIcon;
        public uint dwAttributes;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
        public string szDisplayName;
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
        public string szTypeName;
    }

[StructLayout(LayoutKind.Sequential)]
public struct HResult
{
    private int _value;

    public int Value
    {
        get { return _value; }
    }

    public Exception Exception
    {
        get { return Marshal.GetExceptionForHR(_value); }
    }

    public bool IsSuccess
    {
        get { return _value >= 0; }
    }

    public bool IsFailure
    {
        get { return _value < 0; }
    }
}