/// <summary> /// 获取唯一随机数 /// </summary> /// <param name="prefix">前缀</param> /// <returns></returns> public static string GetRandomFolder(string prefix) { WebSecurityClient wsClient = new WebSecurityClient(); return(wsClient.GetRandomNumber(prefix)); //var n = Directory.GetFiles(Path.GetDirectoryName(HttpContext.Current.Server.MapPath(originalUrl))).Length + 1; //if (rnd == null) rnd = new Random(); //string rndNum = string.Format("{0}{1}", n, (int)(rnd.NextDouble() * int.MaxValue)); //if (rndNum.Length >= 11) return rndNum.Substring(0, 11); //return rndNum.PadRight(11, char.Parse(rnd.Next(10).ToString())); }