CheckBoxListFor with error

Example:

1 - View

@model WebApplication2.Models.BaseModel
@{
    ViewBag.Title = "Listas";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Listas</h2>
@using (Html.BeginForm())
{
    @Html.CheckBoxListFor(
        p => p.BaseSend.Send,
        p => p.BaseAll,
        p => p.Id,
        p => p.Name,
        b => b.BaseSelected            
    )
    <button type="submit">Enviar</button>
}

2 - Classes

public class Base
{       
    public int Id { get; set; }
    public string Name { get; set; }
    public bool IsSelected { get; set; }
    public object Tags { get; set; }

}

public class BaseModel
{
    public IEnumerable<Base> BaseAll { get; set; }
    public IEnumerable<Base> BaseSelected { get; set; }
    public BaseSend BaseSend { get; set; }
}

public class BaseSend
{
    public string[] Send { get; set; }
}

3 - Controller () Method: Lists (GET and POST)

public ActionResult Listas()
{
    BaseModel baseModel = new BaseModel();

    baseModel.BaseAll = new List<Base>(){
        new Base() { Id = 1, Name="Produto 1", IsSelected = true, Tags="Produtos"},
        new Base()  {Id = 2, Name="Produto 2", IsSelected = false, Tags="Produtos"}
    };

    baseModel.BaseSelected = new List<Base>(){
         new Base() { Id = 1, Name="Produto 1", IsSelected = true, Tags="Produtos"},
    };

    return View(baseModel);
}


[HttpPost]
public ActionResult Listas(BaseSend BaseSend)
{   
    return RedirectToAction("Listas");
}

4 - Html Generated

5-RetrievingValues

All copyrights of the site How to Use CheckBoxListFor With ASP.NET MVC 4?

According to documentation :

  

You need to add the following reference in your view first:

@using MvcCheckBoxList.Model