New Post: merge Viewmodel with model validation

Hi,

Im confused. I have a few rules for two models:

Validation for model Sistemas:

public class SistemasMetadata : AbstractValidator<Sistemas>
    {
        public SistemasMetadata()
        {
            RuleFor(s => s.IdSistemaDiccionario)
                .NotNull().WithMessage("* Requerido")
                .GreaterThan(0).WithMessage("* Requerido")
                .NotEmpty().WithMessage("* Requerido");
        }
    }

Validation for model SistemasDiccionario:

public class SistemasDiccionarioMetadata : AbstractValidator<SistemasDiccionario>
    {
        public SistemasDiccionarioMetadata()
        {
            RuleFor(sd => sd.Nombre)
                .NotNull().WithMessage("* Requerido")
                .Must((sd, nombre) => NombreUnico(sd, nombre)).WithMessage("* Nombre existente")
                .Length(1, 200).WithMessage("* Longitud máxima de 200 caracteres");

            RuleFor(sd => sd.Descripcion)
                .Length(0, 500).WithMessage("* Longitud máxima de 500 caracteres");
        }

        private bool NombreUnico(SistemasDiccionario _sd, string nombre)
        {
            //existing logic its ok...
        }
    }

And i have a ViewModel with properties that referencing a model:

    public class SistemasConfiguracionViewModel 
    {
        public Sistemas Sistemas { get; set; }
        public SistemasDiccionario SistemasDiccionario { get; set; }

        //existing logic its ok

     }

And then, i have a view with above view model. In this view i have a check-box to hide or show some part of view. In first part, i just want get a property of "Sistemas". In second part i just want get a property of "SistemasDiccionario".

This is my View:

@model <<NameSpaceItsOk>>.ViewModels.SistemasConfiguracionViewModel

<form id="form" method="post" action="">

<!-- HIDE OR SHOW -->
        <div id="divCrear"> 
            <p>
                @Html.LabelFor(model => model.Sistemas.IdSistemaDiccionario, "Diccionario")
                @Html.TextBoxFor(model => model.Sistemas.IdSistemaDiccionario)
                
            </p>
        </div>

<!-- HIDE OR SHOW -->
        <div id="divCrearNuevo" style="display: none;"> 
            <p>
                @Html.LabelFor(model => model.SistemasDiccionario.Nombre)
                @Html.TextBoxFor(model => model.SistemasDiccionario.Nombre)
            </p>
            <p>
                @Html.LabelFor(model => model.SistemasDiccionario.Descripcion, "Descripción")
                @Html.TextBoxFor(model => model.SistemasDiccionario.Descripcion)
            </p>
        </div>
        <p style="text-align: center;">
            <input type="button" id="btnSubmit" class="boton" value="Crear" />
        </p>
</form>

When i hide one of this part and send httppost to my controller, the ModelState is invalid, because both properties ( i.e. both models ) are validated.

So, How can I exclude one of this validations? Or, how can i handle this situation?

Thank you in advance. Regards!


M.S.