c#不使用windows api函数打开我的电脑和获取电脑驱动器信息

public string GetWindowsPath(string path)
        {
            RegistryKey folders;
            folders = OpenRegistryPath(Registry.CurrentUser, @"\software\microsoft\windows\currentversion\explorer\shell folders");
            return folders.GetValue(path).ToString();
        }
private RegistryKey OpenRegistryPath(RegistryKey root, string s)
        {
            s = s.Remove(0, 1) + @"\";
            while (s.IndexOf(@"\") != -1)
            {
                root = root.OpenSubKey(s.Substring(0, s.IndexOf(@"\")));
                s = s.Remove(0, s.IndexOf(@"\") + 1);
            }
            return root;
        }

//调用
GetWindowsPath("关键字");

DriveInfo[] allDrives = DriveInfo.GetDrives();

foreach (DriveInfo d in allDrives)
{

messagebox.show(d.RootDirectory.FullName+"启动器所有信息在DriveInfo对象里都能找到");
messagebox.show(驱动器的类型+DriveTypeToCH(d.DriveType.ToString()));

}

#region 驱动类型转换
        /// <summary>
        /// 驱动类型转换
        /// </summary>
        /// <param name="_String"></param>
        /// <returns></returns>
        private string DriveTypeToCH(string _String)
        {
            string ToCh = "";
            switch (_String.ToLower())
            {
                case "unknown":
                    ToCh = "其它";
                    break;
                case "removable":
                    ToCh = "移动设备";
                    break;
                case "fixed":
                    ToCh = "硬盘";
                    break;
                case "network":
                    ToCh = "网络硬盘";
                    break;
                case "cdrom":
                    ToCh = "CD-ROM";
                    break;
                case "ram":
                    ToCh = "RAM磁盘";
                    break;
                case "norootdirectory":
                    ToCh = "";
                    break;
                default:
                    break;
            }
            return ToCh;
        }
        #endregion