Get the system's icon of a windows drive or folder with pure .NET Code

public static class IconHelper
{
    [DllImport("gdi32.dll", SetLastError = true)]
    private static extern bool DeleteObject(IntPtr hObjetc);

    [DllImport("shell32")]
    private static extern int SHGetFileInfo(string pszPath, uint dwFileAttributes, out SHFILEINFO psfi, uint cbFileInfo, uint flags);

    private const uint FILE_ATTRIBUTE_DIRECTORY = 0x00000010;
    private const uint FILE_ATTRIBUTE_NORMAL = 0x00000080;

    private const uint SHGFI_ICON = 0x000000100;
    private const uint SHGFI_SMALLICON = 0x000000001;
    private const uint SHGFI_USEFILEATTRIBUTES = 0x000000010;

    [StructLayout(LayoutKind.Sequential)]
    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;
    }

    public static Icon GetIconOfPath(string path, bool isSmallIcon, bool isDirectoryOrDrive)
    {
        uint flags = SHGFI_ICON | SHGFI_USEFILEATTRIBUTES;
        if (isSmallIcon)
            flags |= SHGFI_SMALLICON;

        uint attributes = FILE_ATTRIBUTE_NORMAL;
        if (isDirectoryOrDrive)
            attributes |= FILE_ATTRIBUTE_DIRECTORY;

        int success = SHGetFileInfo(path, attributes, out SHFILEINFO shfi, (uint)Marshal.SizeOf(typeof(SHFILEINFO)), flags);

        if (success == 0)
            return null;

        return Icon.FromHandle(shfi.hIcon);
    }
}