Write a C# program to sort the integers in ascending order without moving the number -5

using System;
using System.Linq;
using System.Collections;

public class Example
    {
      public static int[] sort_numbers(int[] arra)
        {
     
            int[] num = arra.Where(x => x != -5).OrderBy(x => x).ToArray();
            int ctr = 0;

            return arra.Select(x => x >= 0 ? num[ctr++] : -5).ToArray();
        }
  
   public static void  Main()
        {
           int[] x = sort_numbers(new int[] {-5, 236, 120, 70, -5, -5, 698, 280 });
            foreach(var item in x)
             {
               Console.WriteLine(item.ToString());
              }
        }        
}