自动删除文件工具

普通和递归方式删除文件

        /// <summary>
        /// 删除指定文件夹目录下的文件，不包含其中的文件夹
        /// </summary>
        /// <param name="dirInfo"></param>
        /// <param name="time"></param>
        public void delfiles(DirectoryInfo dirInfo, DateTime time)
        {
            try
            {
                if (dirInfo.GetFiles() != null)
                {
                    foreach (FileInfo Fileinfo in dirInfo.GetFiles())
                    {
                        if (Fileinfo.CreationTime < time)
                        {
                            Fileinfo.Delete();
                        }
                    }
                    try
                    {
                        dirInfo.Delete();
                    }
                    catch { }
                }
            }
            catch { }
        }

        /// <summary>
        /// 递归删除指定文件夹所有文件和文件夹
        /// </summary>
        /// <param name="dirInfo"></param>
        /// <param name="time"></param>
        public void delfilesAll(DirectoryInfo dirInfo, DateTime time)
        {
            try
            {
                if (dirInfo.GetFiles() != null)
                {
                    foreach (FileInfo Fileinfo in dirInfo.GetFiles())
                    {
                        if (Fileinfo.CreationTime < time)
                        {
                            Fileinfo.Delete();
                        }
                    }
                    try
                    {
                        dirInfo.Delete();
                    }
                    catch { }
                }
                try
                {
                    if (dirInfo.GetDirectories() != null)
                    {
                        foreach (DirectoryInfo dirInfo1 in dirInfo.GetDirectories())
                        {
                            delfiles(dirInfo1, time);
                        }
                    }
                }
                catch { }
            }
            catch { }
        }

 

用法：使用timer控件 和 后台运行控件

 private void timer1_Tick(object sender, EventArgs e)
        {
            //每隔5分钟扫一次，每天晚上8：05——8：25期间扫描有效，进行图片删除
            if ((!this.backgroundWorker1.IsBusy)
                && (DateTime.Now.Hour == TaskInforList.startH)
                && (DateTime.Now.Minute > TaskInforList.startM && DateTime.Now.Minute < TaskInforList.endM)
                && (!isDeleting))
            {
                isDeleting = true;
                this.backgroundWorker1.RunWorkerAsync();
            }
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            DateTime dt = DateTime.Today;
            if (TaskInforList.includeSubDir)
            {
                for (int i = 0; i < TaskInforList.taskInforList.Count; i++)
                {
                    DateTime dtDiff = dt.AddDays(-TaskInforList.taskInforList[i].Days);
                    delfilesAll(new DirectoryInfo(TaskInforList.taskInforList[i].Path), dtDiff);
                }
            }
            else
            {
                for (int i = 0; i < TaskInforList.taskInforList.Count; i++)
                {
                    DateTime dtDiff = dt.AddDays(-TaskInforList.taskInforList[i].Days);
                    delfiles(new DirectoryInfo(TaskInforList.taskInforList[i].Path), dtDiff);
                }
            }
            isDeleting = false;
        }