Question

I’ve been looking for hours the solution.

I’ve 3 models atm.

Priority:

using System;
using System.Collections.Generic;

namespace IssueReportManagementTest.Models
{
    public class Priority
    {
        public int ID { get; set; }
        public string Name { get; set; }
    }
}

Category:

using System;
using System.Collections.Generic;

namespace IssueReportManagementTest.Models
{
    public class Category
    {
        public int ID { get; set; }
        public string Name { get; set; }
    }
}

And the problem is that I’ve a Issue model and I want dynamic dropdowns from the other models.

Issue

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;

namespace IssueReportManagementTest.Models
{
    public class Issue
    {
        [Key]
        public int IssueID { get; set; }
        public DateTime Added { get; set; }
        public DateTime Modiefied { get; set; }


        public virtual Category Category { get; set; }

        public IEnumerable<Category> Categories { get; set; }

        public virtual Priority Priority { get; set; }
        public IEnumerable<Category> Priorities { get; set; }

        [Required]
        public string Title { get; set; }

        [Required]
        [DataType(DataType.MultilineText)]
        public string Description { get; set; }

    }
}

Is this correct? And what do I need in the Controller if I want to get dropdowns from priorities and categories. And yes they’re stored in the database.

Answer 1

This is what I have taken from my scenario, you can modify and adapt it to fit in with your code.

On my view I have a dropdown that displays the different banks.

My action method where I set the dropdown’s values from the database:

public ActionResult MyActionMethod()
{
     MyViewModel viewModel = new MyViewModel
     {
          Banks = bankRepository.GetAll()
     }

     return View(viewModel);
}

This is what my view model looks like (just a partial view):

public class MyViewModel
{
     public int BankId { get; set; }
     public IEnumerable<Bank> Banks { get; set; }
}

Here is my Bank class:

public class Bank
{
     public int Id { get; set; }
     public string Name { get; set; }
     public bool IsActive { get; set; }
}

This is my dropdown’s code in the view:

<td>Bank:</td>
<td>
     @Html.DropDownListFor(
          x => x.BankId,
          new SelectList(Model.Banks, "Id", "Name", Model.BankId),
          "-- Select --"
     )
     @Html.ValidationMessageFor(x => x.BankId)
</td>

I hope this helps. It doesn’t do anything fancy, it just populates a dropdown. Shout if you need more clarification.