ASP.NET 判断是否是连续的数字（可重复，但必须是连续的数字）

/// <summary>
        /// 传入的值是否是连续的数字（可重复，但必须是连续的数字）
        /// </summary>
        /// <param name="str">1,2,3,4,5,6</param>
        /// <param name="flag">1 Max，2 Min</param>
        /// <returns></returns>
        public static bool GetStrOrder(string str)
        {
            string[] arry = str.Split(',');
            int[] intArray = Array.ConvertAll<string, int>(arry, s => int.Parse(s));
            intArray = intArray.Distinct().OrderByDescending(x => x).ToArray();

            string StrChk = "";
            int Min = intArray.Last();
            int Max = intArray.First();
            for (int i = Min; i <= Max; i++)
            {
                StrChk += "," + i;
            }
            StrChk = StrChk.Substring(1, StrChk.Length - 1);

            string[] arryChk = StrChk.Split(',');
            int[] intArryChk = Array.ConvertAll<string, int>(arryChk, s => int.Parse(s));
            intArryChk = intArryChk.OrderByDescending(x => x).ToArray();

            if (intArray.SequenceEqual(intArryChk))
            {
                return true;
            }

            return false;
        }