Binary Search Recursive, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            Console.WriteLine("-------- Binary search --------");
            
           // Binary search: the data collection should be in the sorted form. 
            // Binary search looks for a particular item by comparing the middle most item of the collection. 
           // If a match occurs, then the index of item is returned. If the middle item is greater than the item, 
            // then the item is searched in the sub-array to the left of the middle item. Otherwise, 
            // the item is searched for in the sub-array to the right of the middle item. 
            // This process continues on the sub-array as well until the size of the subarray reduces to zero.
            
            int[] nums = getList();
            int searchNum = 4;
            int lowIndx = 0;
            int highIndx = nums.Length - 1;
            
            int findIndx = BinarySearchRec(nums,searchNum, lowIndx, highIndx);
            if(findIndx >= 0) {
                    Console.WriteLine("Binary search successful");
                Console.WriteLine("Number {0} found at index {1} and at Location {2}", searchNum, findIndx, findIndx + 1);
            }
            else {
                Console.WriteLine("NOT FOUND");
            }
        }
        
        public static int BinarySearchRec(int[] nums, int searchNum, int lowIndx, int highIndx){
            
            if (lowIndx > highIndx) {
                  return -1;
            } else {
                  int midIndx = (lowIndx + highIndx)/2;
                  if (searchNum == nums[midIndx]) {
                     return midIndx;
                   } else if (searchNum < nums[midIndx]) {
                       return BinarySearchRec(nums, searchNum, lowIndx, midIndx - 1);
                   }
                   else {
                      return BinarySearchRec(nums, searchNum, midIndx + 1, highIndx);
                   }
              }
        }
        
        public static int[] getList(){
            int [] nums = { 2, 4, 6, 8, 10, 12 };
            return nums;
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,19 sec, absolute running time: 0,16 sec, cpu time: 0,11 sec, average memory usage: 15 Mb, average nr of threads: 3, absolute service time: 0,38 sec