Question

I have the following view model to query my table:

QuestionViewModel.cs

public enum TypeQuestion {
   Long = 1,
   Short = 2,
   Small = 3,
}

public class QuestionViewModel
{

    public string Name { get; set; }

    public string LastName { get; set; }

    public string Address { get; set; }

    public string MaxAge { get; set; }

    public string Category { get; set; }

    public string Account { get; set; }

    public TypeQuestion CurrentTypeQuestion { get; set; }
}

if the query I’m doing is of type:

Long: displays all fields.
Short: displays Name, LastName, Address, MaxAge.
Small: displays Name, LastName.

Is there any way to put some kind of DataAnnotation to determine which fields to display in the view or some other way?, To avoid putting a “what if?” for each field.

Thank you.

Answer 1

Based from this link and this link

Controller:

public ActionResult Consulta()
{
    return View(new QuestionViewModel());
}

ViewModel:

public enum TypeQuestion {
   Long = 1,
   Short = 2,
   Small = 3,
}

public class QuestionViewModel
{
    public string Name { get; set; }
    public string LastName { get; set; }
    public string Address { get; set; }
    public int MaxAge { get; set; }
    public string Category { get; set; }
    public string Account { get; set; }
    public TypeQuestion CurrentTypeQuestion { get; set; }

    public bool EnabledField(ModelMetadata field)
    {
        //check pending implementation
        return true;
    }
}

View:

@model MySite.QuestionViewModel
@using System.Linq;
@using System.Collections;

@{
    ViewBag.Title = "Question";
    Layout = "~/Views/Shared/Layout.cshtml";
}
<h2>Question</h2>

@using (Html.BeginForm(new { id = "FormQuestion" }))
{

    foreach (var prop in ViewData.ModelMetadata.Properties
        .Where(pm => pm.ShowForDisplay && !ViewData.TemplateInfo.Visited(pm) && ViewData.Model.EnabledField(pm)))
    {
        if (prop.HideSurroundingHtml)
        {
            Html.Editor(prop.PropertyName);
        }
        else
        {
            <div class="editor-label">
                @(prop.IsRequired ? "*" : "")
                @Html.Label(prop.PropertyName)
            </div>
            <div class="editor-field">
                @Html.Editor(prop.PropertyName, prop.Model)
                @Html.ValidationMessage(prop.PropertyName, "*")
            </div>
        }
    }
}