2020更新:本线程中许多函数提供的更新版本，但现在适用于c# 7.3以上:

现在你可以将泛型方法限制为枚举类型，这样你就可以编写一个方法扩展来使用所有的枚举，如下所示:

泛型扩展方法:

public static string ATexto<T>(this T enumeración) where T : struct, Enum {
    var tipo = enumeración.GetType();
    return tipo.GetMember(enumeración.ToString())
    .Where(x => x.MemberType == MemberTypes.Field && ((FieldInfo)x).FieldType == tipo).First()
    .GetCustomAttribute<DisplayAttribute>()?.Name ?? enumeración.ToString();
} 

枚举:

public enum TipoImpuesto { 
IVA, INC, [Display(Name = "IVA e INC")]IVAeINC, [Display(Name = "No aplica")]NoAplica };

如何使用:

var tipoImpuesto = TipoImpuesto.IVAeINC;
var textoTipoImpuesto = tipoImpuesto.ATexto(); // Prints "IVA e INC".

附加的，带有标志的枚举:如果你处理的是普通的枚举，上面的函数就足够了，但如果你的任何枚举都可以通过使用标志来获得多个值，那么你就需要像这样修改它(这段代码使用c# 8的特性):

    public static string ATexto<T>(this T enumeración) where T : struct, Enum {

        var tipo = enumeración.GetType();
        var textoDirecto = enumeración.ToString();

        string obtenerTexto(string textoDirecto) => tipo.GetMember(textoDirecto)
            .Where(x => x.MemberType == MemberTypes.Field && ((FieldInfo)x).FieldType == tipo)
            .First().GetCustomAttribute<DisplayAttribute>()?.Name ?? textoDirecto;

        if (textoDirecto.Contains(", ")) {

            var texto = new StringBuilder();
            foreach (var textoDirectoAux in textoDirecto.Split(", ")) {
                texto.Append($"{obtenerTexto(textoDirectoAux)}, ");
            }
            return texto.ToString()[0..^2];

        } else {
            return obtenerTexto(textoDirecto);
        }

    } 

带标志的枚举:

[Flags] public enum TipoContribuyente {
    [Display(Name = "Común")] Común = 1, 
    [Display(Name = "Gran Contribuyente")] GranContribuyente = 2, 
    Autorretenedor = 4, 
    [Display(Name = "Retenedor de IVA")] RetenedorIVA = 8, 
    [Display(Name = "Régimen Simple")] RégimenSimple = 16 } 

如何使用:

var tipoContribuyente = TipoContribuyente.RetenedorIVA | TipoContribuyente.GranContribuyente;
var textoAux = tipoContribuyente.ATexto(); // Prints "Gran Contribuyente, Retenedor de IVA".

假设你的枚举名称是OrderState，使用以下代码:

@Html.DropDownList("selectList", new SelectList(Html.GetEnumSelectList<OrderState>(), "Value", "Text",ViewBag.selectedOrderState), new {@id="OrderState", @class = "form-control" })                

在后台设置选中的选项:

 var selectedOrderState = ..Data.OrderState.GetHashCode();
        ViewBag.selectedOrderState = selectedOrderState;

        

在。net 5中，我使用了DisplayTextFor而不需要helper或扩展方法:

@Html.DisplayTextFor(m => m.SomeEnumProperty)

SomeEnumProperty的值为:

public enum MyEnum
{
    [Display(Name = "Not started")]
    NotStarted = 0,
    [Display(Name = "Weird display name instead of just 'Started'")]
    Started = 1,
}

你可以使用Type。GetMember方法，然后使用反射获取属性信息:

// display attribute of "currentPromotion"

var type = typeof(UserPromotion);
var memberInfo = type.GetMember(currentPromotion.ToString());
var attributes = memberInfo[0].GetCustomAttributes(typeof(DisplayAttribute), false);
var description = ((DisplayAttribute)attributes[0]).Name;

这里也有一些类似的帖子:

获取Enum值的属性

如何使MVC3 DisplayFor显示一个Enum的显示属性的值?

一行-流畅的语法

public static class Extensions
{
    /// <summary>
    ///     A generic extension method that aids in reflecting 
    ///     and retrieving any attribute that is applied to an `Enum`.
    /// </summary>
    public static TAttribute GetAttribute<TAttribute>(this Enum enumValue) 
            where TAttribute : Attribute
    {
        return enumValue.GetType()
                        .GetMember(enumValue.ToString())
                        .First()
                        .GetCustomAttribute<TAttribute>();
    }
}

例子

public enum Season 
{
   [Display(Name = "It's autumn")]
   Autumn,

   [Display(Name = "It's winter")]
   Winter,

   [Display(Name = "It's spring")]
   Spring,

   [Display(Name = "It's summer")]
   Summer
}

public class Foo 
{
    public Season Season = Season.Summer;

    public void DisplayName()
    {
        var seasonDisplayName = Season.GetAttribute<DisplayAttribute>();
        Console.WriteLine("Which season is it?");
        Console.WriteLine (seasonDisplayName.Name);
    } 
}

输出

现在是哪个季节? 现在是夏天

这可能是欺骗，但它是有效的:

 @foreach (var yourEnum in Html.GetEnumSelectList<YourEnum>())
 {
     @yourEnum.Text
 }