C# 数字转换成数组

/// <summary>
        ///  将整型转成整型数组
        /// </summary>
        /// <example>10 转成 num[0]=1 num[1]=0 </example>
        /// <param name="showNumber">整型数字</param>
        /// <param name="realCount">返回的实际大小，即数组长度</param>
        /// <returns>整型数组</returns>
        private int[] getNumHash(int showNumber, ref int realCount)
        {
            int[] num_hash = new int[10];
            int index = 0;
            while (showNumber / 10 != 0)
            {
                num_hash[index] = (showNumber % 10);
                showNumber /= 10;
                index++;
            }
            num_hash[index] = showNumber;
            realCount = index + 1;
            return num_hash;
        }