将枚举与C#中的字符串相关联

public enum Fruit
{
    [Description("红色的苹果")]
    Apple,
    [Description("绿色的苹果")]
    GreenApple,
    [Description("橙色的橙子")]
    Orange
}

public static string GetDescription(Enum value)
{
    Type type = value.GetType();
    string name = Enum.GetName(type, value);
    if (name != null)
    {
        FieldInfo field = type.GetField(name);
        if (field != null)
        {
            DescriptionAttribute attr = 
                    Attribute.GetCustomAttribute(field, 
                        typeof(DescriptionAttribute)) as DescriptionAttribute;
            if (attr != null)
            {
                return attr.Description;
            }
        }
    }
    return null;
}

Fruit fruit = Fruit.Apple;
string description = GetDescription(fruit);
Console.WriteLine(description); // 输出 "红色的苹果"