use Linq Cast to convert array to IEnumerable

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

public class MainClass{
   public static void Main(){
            object[] doubles = {1.0, 2.0, 3.0};
            IEnumerable<double> d = doubles.Cast<double>();
            Console.Write(d);
   }
}