C# 清空文件夹内容

/// <summary>
        /// 清空文件夹
        /// </summary>
        /// <param name="filefullPath">文件夹路径</param>
        /// <param name="FileExpirationTime">过期时间</param>
        private void removeTemporaryFiles(string filefullPath, int FileExpirationTime)
        {
            try
            {
                DirectoryInfo dir = new DirectoryInfo(filefullPath);
                if (dir.Exists)
                {
                    DirectoryInfo[] childs = dir.GetDirectories();
                    foreach (DirectoryInfo child in childs)
                    {
                        if (child.CreationTime < DateTime.Now.AddMinutes(-FileExpirationTime))
                            child.Delete(true);
                    }
                }

                foreach (string file in Directory.GetFiles(filefullPath, "*.zip"))
                {
                    FileInfo fileInfo = new FileInfo(file);
                    if (fileInfo.CreationTime < DateTime.Now.AddMinutes(-FileExpirationTime))
                    {
                        fileInfo.Delete();
                    }
                }

                foreach (string file in Directory.GetFiles(filefullPath, "*.doc"))
                {
                    FileInfo fileInfo = new FileInfo(file);
                    if (fileInfo.CreationTime < DateTime.Now.AddMinutes(-FileExpirationTime))
                    {
                        fileInfo.Delete();
                    }
                }
                foreach (string file in Directory.GetFiles(filefullPath, "*.docx"))
                {
                    FileInfo fileInfo = new FileInfo(file);
                    if (fileInfo.CreationTime < DateTime.Now.AddMinutes(-FileExpirationTime))
                    {
                        fileInfo.Delete();
                    }
                }
            }
            catch (Exception ex)
            {
                LogHelper.Error($"Clean temporary files failed:{filefullPath}");
                LogHelper.Error(ex.Message);
            }
        }