public static string deleteOneFile(string fileFullPath)
        {
            // 1、首先判斷文件或者文件路徑是否存在
            if (Directory.Exists(fileFullPath))
            {
                // 2、根據(jù)路徑字符串判斷是文件還是文件夾
                FileAttributes attr = File.GetAttributes(fileFullPath);
                // 3、根據(jù)具體類型進(jìn)行刪除
                if (attr == FileAttributes.Directory)
                {
                    Directory.Delete(fileFullPath, true); // 3.1、刪除文件夾
                }
                else
                {
                    File.Delete(fileFullPath);// 3.2、刪除文件
                }
                File.Delete(fileFullPath);
                return "刪除成功:" + fileFullPath;
            }
            return "無(wú)該文件或文件夾:" + fileFullPath;
        }

    /// <summary>
    /// 根據(jù)路徑刪除文件
    /// </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);
        }
    }