/// <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()));
}
