Auto increment Id in MVC Razor view

Here I have created sample that will help you out.

Index(View)

<div>
    <table>
        <tr>
            <th>
                ID
            </th>
            <th>
                Name
            </th>
            <th>
                Email
            </th>
            <th>
                contact
            </th>
            <th>
                Country
            </th>
            <th>
                Department
            </th>
        </tr>
        <% foreach (var item in Model)
            { %>
        <tr>
            <td>
                <%: item.ID %>
            </td>
            <td>
                <%: item.Name %>
            </td>
            <td>
                <%: item.Email %>
            </td>
            <td>
                <%: item.contact %>
            </td>
            <td>
                <%: item.Country %>
            </td>
            <td>
                <%: item.Department %>
            </td>
        </tr>
        <% } %>
    </table>
</div>

HomeController(Controller)

public ActionResult Index()
{
    IEnumerable<Employee> emp = new List<Employee>()
    {
        new Employee(){Name="David",Email="david@hr.com",contact="56142582376",Country="New Zealand" ,Department="HR"},
        new Employee(){Name="Jhon",Email="Jhon@it.com",contact="8934758934",Country="Sweden",Department="IT"},
        new Employee(){Name="Natsha",Email="Natsha@hr.com",contact="2386784356",Country="United Kingdom",Department="HR"},
        new Employee(){Name="Maria",Email="Maria@it.co.uk",contact="1248902357",Country="United Kingdom",Department="IT"},
        new Employee(){Name="james",Email="james@acc.com",contact="325783589",Country="America",Department="ACC"},
        new Employee(){Name="Paul",Email="Paul@it.com",contact="95804693476",Country="South Africa",Department="IT"},
        new Employee(){Name="Desiel",Email="Desiel@hr.com",contact="0085947587258",Country="Russia",Department="HR"},
        new Employee(){Name="Ronald",Email="Ronald@acc.com",contact="89756237523",Country="Germany",Department="ACC"},
        new Employee(){Name="Thomas",Email="Thomas@acc.com",contact="889456785665",Country="France",Department="ACC"},
        new Employee(){Name="Ryan",Email="Ryan@it.com",contact="2467846786376",Country="America",Department="IT"},
        new Employee(){Name="Dave",Email="Dave@hr.com",contact="3578934758965",Country="Germany",Department="HR"},
        new Employee(){Name="Sara",Email="Sara@ac.com",contact="4578975823",Country="Poland",Department="ACC"},
        new Employee(){Name="Dayna",Email="Dayna@it.com",contact="76578237865",Country="Australia",Department="IT"}
    };
    IEnumerable<Employee> employees = emp.Select((x, i) => new Employee
    {
        ID = i + 1,
        contact = x.contact,
        Country = x.Country,
        Department = x.Department,
        Email = x.Department,
        Name = x.Name
    });
    return View(employees);
}

Employee(Model)

public class Employee
{
    public int ID { get; set; }
    public string Name { get; set; }
    public string Email { get; set; }
    public string contact { get; set; }
    public string Country { get; set; }
    public string Department { get; set; }
}

Screenshot