// Entity Framework Classic

// Doc: https://entityframework-classic.net/linq-dynamic

​

// @nuget: Z.EntityFramework.Classic

// @nuget: Newtonsoft.Json

​

using System;

using System.Collections.Generic;

using System.Data.Entity;

using System.Linq;

using System.Linq.Expressions;  

using Newtonsoft.Json;

using Z.Expressions;

​

public class Program

{

    public static void Main()

    {

        List<int> ids = new List<int>{1, 2, 3, 4, 5, 6};

        var c = ids as IEnumerable<object>;

        if(c == null)

        {

            Console.WriteLine("C is NULL!");

        } else {

            Console.WriteLine("C count" + c.Count());

        }

    }

}