Class Is Not Accessing In Another Class

Question

Hi

I have create a website and i have create two folders one is BAL(Business access layer) and other one is DAL(Data access layer)

<big>In BAL i have created this code</big>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

    public class Employees

    {

        public Employees()

        { }

        public int ID { get; set; }

        public string FirstName { get; set; }

        public string LastName { get; set; }

        public string Address { get; set; }

        public string Number { get; set; }

    }

and i have create class in DAL and i am trying to create below code in DAL

problem is that Employees class is not accessing and also list<> not accessing here 

i don't know why it is happening can any one help me please

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

/// <summary>

/// Summary description for insert_customer

/// </summary>

public class insert_customer

{

public insert_customer()

{}

    public List<Employees> insert_emp(Employees emp)

    {

        

    }

}

  

<big>problem is that Employees class is not accessing and also list<> not accessing here 

i don't know why it is happening can any one help me please

</big>