Html.Beginform() No Submits model, Modelstate.Isvalid = False

Question

Next I am with Html.Beginform() where the same Submits the model however when it goes to the control it is false the Modelstate.IsValid. Follows Model, Control and Beginform Model:

[Table("TB_Estado")]
public class Estado
{
    [Key]
    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int ID { get; set; }
    public string sigla { get; set; }
    public string estado { get; set; }
}

Control [Post]Create

   [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create(Estado estado)
    {
        if (ModelState.IsValid)
        {
            db.Estados.Add(estado);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        return View(estado);
    }

View Create

@using (Html.BeginForm()) 
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Estado</h4>
        <hr />
        <div class="form-group">
            @Html.LabelFor(model => model.sigla, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.sigla, new { htmlAttributes = new { @class = "form-control" } })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.estado, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.estado, new { htmlAttributes = new { @class = "form-control" } })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" />
            </div>
        </div>
    </div>
}

See the image illustrating the problem:

As requested by the staff the inspection of the Keys and Values of Modelstate, had already analyzed and the same says that it was not possible to convert the String, being that the fields are all String and simple, the ID is auto increment. I am starting now at ASP . NET MVC and I apologize for any Nubisse, rsrsrrsrs.

Error message = "The Parameter Conversion from type 'System.String' to type 'pedicare.sidigital.com.br.web.Models.Status' failed because no type converter can Convert between These types."

Answer 1

I found the problem with this case. I found that in the signature of the post method Create(Estado estado) the State object has the same name as the variable of the "state" class, which confuses the Modelbinder. In this case, changing the name of the internal variable, the problem was solved.

After solved I found the post below Fabio Gantmans, below the link.

http://www.aprendadotnet.com.br/Artigo/1094/asp-net-mvc-5-model-binder-null-no-httppost