删除文件夹里的图片，打印删除日志

                #region 僵尸文件夹中的文件如果不在活文件列表中，删之
                List<string> deadfile = new List<string>();
                foreach(string str in lstZombileDic)
                {
                    if(Directory.Exists(str))
                    {
                        var myfiles = Directory.GetFiles(str, "*.*");
                        foreach (var file in myfiles)
                        {
                            if (imgurl.Contains(file))
                            {
                                break;
                            }
                            else
                            {
                                if (File.Exists(file))
                                {
                                    deadfile.Add(file);
                                    File.Delete(file);
                                    sum++;
                                }
                            }
                        }
                    }
                }
                #endregion

                #region 下面的图片即将删除
                //测试时打印出检查
                if (!Directory.Exists(constant.TestZombileDir))
                    Directory.CreateDirectory(constant.TestZombileDir);
                string filePath = constant.TestZombileDir + DateTime.Now.ToString("MM月dd日HH时mm分ss秒") + "Zombile.txt";
                using (FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write))
                {
                    StreamWriter sw = new StreamWriter(fs);
                    int i = 1,j=1,k=1;
                    foreach (string url in imgurl)
                    {
                        sw.WriteLine("序号" + i + ":活的图片绝对路径：" + url);
                        i++;
                    }
                    foreach (string str in lstZombileDic)
                    {
                        sw.WriteLine("序号" + j + ":僵尸文件夹：" + str);
                        j++;
                    }
                    foreach (string zombile in deadfile)
                    {
                        sw.WriteLine("序号" + k + ":删除的僵尸图片绝对路径：" + zombile);
                        k++;
                    }
                    sw.Close();
                }
                //the End
                #endregion