麻烦大家看看这段程序哪里错了呀

我写了个快速排序的程序，运行到sh.Sort(iArrary)这里的时候，出现No overload for method 'Sort' takes '1' arguments的提示，麻烦大家看看，我这个程序是哪儿错了，该怎样去改。谢谢！using System;using System.IO;using System.Data;namespace coreQuickSort
{    public class QuickSort
    {        private void Swap(ref int i, ref int j)
        //swap two integer 
        {
            int t;
            t = i;
            i = j;
            j = t;
        }        public QuickSort()
        { }
        public void Sort(int[] list, int low, int high)
        {
            if (high <= low)
            {
                //only one element in array list 
                //so it do not need sort 
                return;
            }
            else if (high == low + 1)
            {
                //means two elements in array list 
                //so we just compare them 
                if (list[low] > list[high])
                {
                    //exchange them 
                    Swap(ref list[low], ref list[high]);
                    return;
                }
            }            //more than 3 elements in the arrary list 
            //begin QuickSort 
            myQuickSort(list, low, high);
        }        public void myQuickSort(int[] list, int low, int high)
        {
            if (low < high)
            {
                int pivot = Partition(list, low, high);
                myQuickSort(list, low, pivot - 1);
                myQuickSort(list, pivot + 1, high);
            }
        }        private int Partition(int[] list, int low, int high)
        {
            //get the pivot of the arrary list 
            int pivot;
            pivot = list[low];
            while (low < high)
            {
                while (low < high && list[high] >= pivot)
                {
                    high--;
                }
                if (low != high)
                {
                    Swap(ref list[low], ref list[high]);
                    low++;
                }
                while (low < high && list[low] <= pivot)
                {
                    low++;
                }
                if (low != high)
                {
                    Swap(ref list[low], ref list[high]);
                    high--;
                }
            }
            return low;
        }        public class MainClass
        {
            public static void Main()
            {
                int[] iArrary = new int[] { 1, 5, 13, 6, 10, 55, 99, 2, 87, 12, 34, 75, 33, 47 };
                QuickSort sh = new QuickSort();
                sh.Sort(iArrary); //就是这里有点问题
                for (int m = 0; m < iArrary.Length; m++)
                    Console.Write("{0} ", iArrary[m]);
                Console.WriteLine();
            }
        }    }
}