如何从值中获取 C# 枚举描述? [英] How to get C# Enum description from value?

问题描述

我有一个像这样的描述属性的枚举:

I have an enum with Description attributes like this:

public enum MyEnum
{
    Name1 = 1,
    [Description("Here is another")]
    HereIsAnother = 2,
    [Description("Last one")]
    LastOne = 3
}

我发现这段代码用于检索基于枚举的描述

I found this bit of code for retrieving the description based on an Enum

public static string GetEnumDescription(Enum value)
{
    FieldInfo fi = value.GetType().GetField(value.ToString());

    DescriptionAttribute[] attributes = fi.GetCustomAttributes(typeof(DescriptionAttribute), false) as DescriptionAttribute[];

    if (attributes != null && attributes.Any())
    {
        return attributes.First().Description;
    }

    return value.ToString();
}

这允许我编写如下代码:

This allows me to write code like:

var myEnumDescriptions = from MyEnum n in Enum.GetValues(typeof(MyEnum))
                         select new { ID = (int)n, Name = Enumerations.GetEnumDescription(n) };

我想要做的是，如果我知道枚举值(例如 1) - 我如何检索描述?换句话说，如何将整数转换为枚举值"以传递给我的 GetDescription 方法?

What I want to do is if I know the enum value (e.g. 1) - how can I retrieve the description? In other words, how can I convert an integer into an "Enum value" to pass to my GetDescription method?

推荐答案

int value = 1;
string description = Enumerations.GetEnumDescription((MyEnum)value);

C# 中 enum 的默认基础数据类型是 int，你可以直接转换它.

The default underlying data type for an enum in C# is an int, you can just cast it.

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