反射(2)
反射例子——获取枚举的备注信息
static void Main(string[] args)
{
var str = ColorType.Blue.GetRemark();
Console.WriteLine(str);
Console.ReadLine();
}
public static string GetRemark(this Enum em)
{
Type type = em.GetType();
FieldInfo fieldInfo = type.GetField(em.ToString());
if (fieldInfo == null)
{
return string.Empty;
}
object[] attrs = fieldInfo.GetCustomAttributes(typeof(RemarkAttribute), false);
string name = string.Empty;
foreach (RemarkAttribute attr in attrs)
{
name = attr.Remark;
}
return name;
}
public class RemarkAttribute : Attribute
{
public RemarkAttribute(string remark)
{
this.Remark = remark;
}
public string Remark { get; set; }
}
public enum ColorType
{
[Remark(“黑色”)] Black = 1,
[Remark(“蓝色”)] Blue = 2,
[Remark(“红色”)] Red = 3
}
结果:蓝色
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