我创建了一个枚举扩展名:
using System;
using System.ComponentModel;
namespace Shared.Enums.Extensions
{
public static class EnumExtensions {
// This extension method is broken out so you can use a similar pattern with
// other MetaData elements in the future. This is your base method for each.
public static T GetAttribute<T>(this Enum value) where T : Attribute {
var type = value.GetType();
var memberInfo = type.GetMember(value.ToString());
var attributes = memberInfo[0].GetCustomAttributes(typeof(T), false);
return attributes.Length > 0
? (T)attributes[0]
: null;
}
// This method creates a specific call to the above method, requesting the
// Description MetaData attribute.
public static string ToName(this Enum value) {
var attribute = value.GetAttribute<DescriptionAttribute>();
return attribute == null ? value.ToString() : attribute.Description;
}
}
}
这使我可以向枚举成员添加属性,以便可以使用ToName()
扩展方法获得格式正确的字符串,以向用户表示emum:
public enum Rarity
{
[Description("One of a kind")]
OneOfAKind,
[Description("Rare Item")]
RareItem
}
// Then in my razor view
<dt>
@Html.DisplayNameFor(model => model.Rarity)
</dt>
<dd>
@Model.Rarity.ToName()
</dd>
哪个很棒!
所以我希望在选择下拉列表中使用此描述。
但是似乎无法找到使用HTML.Helpers在Razor视图中实现此目标的方法。调用ToName()
扩展方法的逻辑应该放在哪里?
<div class="form-group">
<label asp-for="Rarity" class="control-label"></label>
<select asp-for="Rarity"
asp-items="Html.GetEnumSelectList<Rarity>()" class="form-control"></select>
</div>
答案 0 :(得分:1)
您要使用System.DataAnnotations.Display名称而不是描述。按照这个答案: Html.GetEnumSelectList - Getting Enum values with spaces