How to use delegates in C# - step 1

using System;

namespace TestDelegate
{
    class Program
    {
        delegate void Sorter(ref int[] num); 

        static void BinarySort(ref int[] numbers)
        {
            //Some Codes to sort the array with Binary algoritm
            //Finally, The array will be something like this :

            numbers = new int[] { 0,1,2,3,4,5,6,7,8,9,10};
        }

        static void QuickSort(ref int[] numbers)
        {
            //Some Codes to sort the array with Quick algoritm
            //Finally, The array will be something like this :

            numbers = new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
        }

        static void TreeSort(ref int[] numbers)
        {
            //Some Codes to sort the array with Tree algoritm
            //Finally, The array will be something like this :

            numbers = new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
        }

        static bool SortAndSearch(ref int[] numbers, Sorter srt,int member)
        {
            srt(ref numbers);

            foreach (int i in numbers)
                if (i == member)
                    return true;

            return false;
        }

        static void Main(string[] args)
        {
            int[] numbers = new int[] { 5, 9, 10, 3, 7, 2, 6, 1, 4, 8, 0 };


            Console.WriteLine("Please Enter a method for Sorting\n (Binary/Quick/Tree)?");


            //Consider Binary Search as default

            Sorter sortIt = new Sorter(BinarySort);;
            
            switch (Console.ReadLine().ToUpper())
            {
                case "QUICK":
                    sortIt = new Sorter(QuickSort);
                    break;
                case "TREE":
                    sortIt = new Sorter(TreeSort);
                    break;
            }

            Console.WriteLine("Please Enter a Number to search");

            if (SortAndSearch(ref numbers, sortIt, Convert.ToInt32(Console.ReadLine())))
                Console.WriteLine("founded");
            else
                Console.WriteLine("Not Founde");

            Console.ReadLine();
        }
    }
}