public static void DeleteFolder(string dirPath)
        {
            if (!Directory.Exists(dirPath))
            {
                return;
            }

            var directory = dirPath;
            var subdirectories = new Stack<string>();
            subdirectories.Push(directory);

            var exceptionList = new List<Exception>();

            var folderList = new List<string>();

            // 尽可能地删除目录中的文件。

            // 如果出现异常也不需要记录
            while (subdirectories.Any())
            {
                var dir = subdirectories.Pop();
                folderList.Add(dir);

                try
                {
                    var files = Directory.GetFiles(dir);
                    foreach (var file in files)
                    {
                        try
                        {
                            File.SetAttributes(file, FileAttributes.Normal);
                            File.Delete(file);
                        }
                        catch (Exception e)
                        {
                            exceptionList.Add(e);
                        }
                    }
                }
                catch (Exception e)
                {
                    exceptionList.Add(e);
                }

                try
                {
                    var subdirs = Directory.GetDirectories(dir);
                    foreach (var subdir in subdirs)
                    {
                        subdirectories.Push(subdir);
                    }
                }
                catch (Exception e)
                {
                    exceptionList.Add(e);
                }
            }

            // 删除目录结构。
            try
            {
                for (var i = folderList.Count - 1; i >= 0; i--)
                {
                    try
                    {
                        Directory.Delete(folderList[i], true);
                    }
                    catch (Exception e)
                    {
                        exceptionList.Add(e);
                    }
                }

                if (Directory.Exists(directory))
                {
                    Directory.Delete(directory, true);
                }
            }
            catch (Exception e)
            {
                exceptionList.Add(e);
            }

            if (exceptionList.Any())
            {
                Console.WriteLine("Error when DeleteFolder");
                Console.WriteLine(new AggregateException(exceptionList));
            }
        }