GenericEnumController.cs

public interface ICatalogue
    {
        int Id { get; set; }
        string Name { get; set; }
    }

public abstract class BaseEnumController<TEnum, TViewModel> : Controller
    where TEnum : struct, IConvertible, IFormattable
    where TViewModel : class, ICatalogue, new()
{

    [HttpGet]
    public IEnumerable<TViewModel> GetMany(string contentName)
    {
        var totalItemCount = Enum.GetValues(typeof(TEnum)).Length;
        var items = Enum.GetValues(typeof(TEnum))
            .Cast<TEnum>()
            .Select(e => new TViewModel
            {
                Id = (int)(object)e,
                Name = e.GetType()
                    .GetMember(e.ToString())
                    .First()
                    .GetCustomAttribute<DisplayAttribute>()
                    .GetName()
            });

        HttpContext.Response.AddContentRangeHeader(
            contentName,
            new PagingOptions(0, totalItemCount),
            totalItemCount);

        return items;
    }

    [HttpGet("{id}")]
    public IActionResult GetOne([FromRoute] int id)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        if (!Enum.IsDefined(typeof(TEnum), id))
        {
            return NotFound();
        }

        var enumValue = (TEnum)(object)id;
        var condition = new TViewModel
        {
            Id = id,
            Name = enumValue.GetType()
                .GetMember(enumValue.ToString())
                .First()
                .GetCustomAttribute<DisplayAttribute>()
                .GetName()
        };

        return Ok(condition);
    }
}