C#如何删除指定文件或文件夹

public static string deleteOneFile(string fileFullPath)
        {
            // 1、首先判断文件或者文件路径是否存在
            if (Directory.Exists(fileFullPath))
            {
                // 2、根据路径字符串判断是文件还是文件夹
                FileAttributes attr = File.GetAttributes(fileFullPath);
                // 3、根据具体类型进行删除
                if (attr == FileAttributes.Directory)
                {
                    Directory.Delete(fileFullPath, true); // 3.1、删除文件夹
                }
                else
                {
                    File.Delete(fileFullPath);// 3.2、删除文件
                }
                File.Delete(fileFullPath);
                return "删除成功:" + fileFullPath;
            }
            return "无该文件或文件夹:" + fileFullPath;
        }

    /// <summary>
    /// 根据路径删除文件
    /// </summary>
    /// <param name="path"></param>
    public void DeleteFile(string path)
    {
        FileAttributes attr = File.GetAttributes(path);
        if (attr == FileAttributes.Directory)
        {
            Directory.Delete(path, true);
        }
        else
        {
            File.Delete(path);
        }
    }