The update function doesn't work, SQL Server and ASP.NET MVC 5

Question

I have to update a table but it doesn't do anything. In the view for edit my values, it "works", but when I click to submit changes, it doesn't change any values in the data base. I'm really stuck, I check this files but I can't see where the problem is.

This is my.cs file

 public void update(Propietario objPropietario)
 {
        try
        {
            comando = new SqlCommand("spEditarPropietario", objConexion.getConexion());
            comando.CommandType = CommandType.StoredProcedure;

            comando.Parameters.AddWithValue("@id", objPropietario.IdPropietario);
            comando.Parameters.AddWithValue("@Nombre", objPropietario.Nombre);
            comando.Parameters.AddWithValue("@IdTipoDocumento", objPropietario.TipoDocumento);
            comando.Parameters.AddWithValue("@ValorDocumento", objPropietario.ValorDocumentoId);

            objConexion.getConexion().Open();
            comando.ExecuteNonQuery();
        }
        catch (Exception)
        {
            throw;
        }
        finally
        {
            objConexion.getConexion().Close();
            objConexion.cerrarConexion();
        }
}

The table:

CREATE TABLE [dbo].[Propietario]
(
    [ID] [int] IDENTITY(1,1) NOT NULL,
    [IdTipoDocumento] [int] NOT NULL,
    [Nombre] [varchar](100) NOT NULL,
    [ValorDocumento] [varchar](30) NULL,

    CONSTRAINT [PK_Propietario] 
        PRIMARY KEY CLUSTERED ([ID] ASC)
                    WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, 
                          IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, 
                          ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO

ALTER TABLE [dbo].[Propietario] WITH CHECK 
    ADD CONSTRAINT [FK_Propietario_TipoDocumentoId] 
        FOREIGN KEY([IdTipoDocumento]) REFERENCES [dbo].[TipoDocumentoId] ([ID])
GO

ALTER TABLE [dbo].[Propietario] CHECK CONSTRAINT [FK_Propietario_TipoDocumentoId]
GO

This is the stored procedure that I'm using:

CREATE PROCEDURE spEditarPropietario  
    (@id int,
     @Nombre VARCHAR(100),
     @IdTipoDocumento int,
     @ValorDocumento VARCHAR(30))      
AS
BEGIN
    UPDATE [dbo].Propietario
    SET Nombre = @Nombre, 
        IdTipoDocumento = @IdTipoDocumento, 
        ValorDocumento = @ValorDocumento
    WHERE ID = @id      
END

This is my controller:

[HttpGet]
public ActionResult Update(int ID)
{
    Propietario objpropietario = new Propietario(ID);
    objetoPropietario.find(objpropietario);
    return View(objpropietario);
}

[HttpPost]
public ActionResult Update(Propietario objpropietario)
{
    objetoPropietario.update(objpropietario);
    return RedirectToAction("Inicio");
}

I have this find method and it works well.

public bool find(Propietario objpropietario)
{
        bool hayRegistros;

        try
        {
            comando = new SqlCommand("spVerPropietario", 
objConexion.getConexion());
            comando.CommandType = CommandType.StoredProcedure;

            comando.Parameters.AddWithValue("@ID", 
objpropietario.IdPropietario);

            objConexion.getConexion().Open();

            SqlDataReader read = comando.ExecuteReader();
            hayRegistros = read.Read();

            if (hayRegistros)
            {
                objpropietario.IdPropietario = 
Convert.ToInt32(read[0].ToString());
                objpropietario.Nombre = read[1].ToString();
                objpropietario.TipoDocumento = 
Convert.ToInt32(read[2].ToString());
                objpropietario.ValorDocumentoId = read[3].ToString();
                objpropietario.EstadoError = 99;
            } 
            else
            {
                objpropietario.EstadoError = 1;
            }
        }
        catch (Exception)
        {
            throw;
        }
        finally
        {
            objConexion.getConexion().Close();
            objConexion.cerrarConexion();
        }
        return hayRegistros;
}

This is the stored procedure:

CREATE PROCEDURE spVerPropietario     
    (@ID int)      
AS
BEGIN
    SELECT ID, Nombre, IdTipoDocumento, ValorDocumento 
    FROM [dbo].Propietario 
    WHERE ID = @ID     
END

Answer 1

I fixed adding a new parameter of the id, to the Update method in controller, because the object changes the id to 0, that's why it didn't work. The solution:

public ActionResult Update(Propietario objpropietario, int ID)
    {
        objpropietario.IdPropietario = ID;
        objetoPropietario.update(objpropietario);
        //return Content(obj.propietario.Nombre 
        //return View(objpropietario);
        return RedirectToAction("Inicio");
    }

Only with that, it works fine.