關於文件/文件夾的使用

1.讀取一個文件夾（可以自選）內的所有文件

　　　　　　　FolderBrowserDialog dlgOpenFolder = new FolderBrowserDialog();
            if (dlgOpenFolder.ShowDialog() == DialogResult.OK)
            {
                lblSourceLabel.Text = "Source Label File:" + dlgOpenFolder.SelectedPath;
                DirectoryInfo dir = new DirectoryInfo(dlgOpenFolder.SelectedPath + @"\");
                FileInfo[] filess = dir.GetFiles();
                foreach (FileInfo file in filess)
                {
                    
                }
                btnPackingListPrint.Enabled = true;
                btnPrintPDF.Enabled = true;
                MessageBox.Show("轉換完成！");
            }

2.如何判斷將要讀取的文件是否有全部控制權限

        if (CheckFileLock(PrintLabelModel.SavePath + file, ref j))
        {
　　　　　}

　　　　　public static bool CheckFileLock(string fileName, ref int TryTimes)
        {
            return CheckFileLock(fileName, ref TryTimes, InputFileTryInterval);
        }

        public static bool CheckFileLock(string fileName, ref int TryTimes, int     tryintervalms)
        {
            var _numberOfTries = TryTimes;
            TryTimes = 0;
            while (true)
            {
                TryTimes++;
                try
                {
                    using (var fs = File.Open(fileName, FileMode.Open, FileAccess.ReadWrite, FileShare.Delete))
                    {
                        fs.Close();
                    }
                    return true;
                }
                catch (IOException e)
                {
                    if (!IsFileLocked(e))
                    {
                        throw;
                    }
                    if (++TryTimes > _numberOfTries)
                    {
                        //Loghelper.Write(LogLevel.Info, "讀取次數:" + TryTimes);
                        throw new Exception("The file is locked too long: " + e.Message, e);
                    }
                    Thread.Sleep(tryintervalms);
                }
            }
        }