在方法属性不起作用 [英] Attribute on method doesn't work

问题描述

我有一个属性（在C＃库）的方法。问题是，当我打电话给我的方法，属性不叫。我不明白为什么！

I have a method with an attribute (in c# library). The problem is that attribute is not call when I call my method. I don't understand why !

我的code：

[AttributeUsage(System.AttributeTargets.Method)]
public class RequireAuthorization : System.Attribute
{
    private bool _protected = true;

    public RequireAuthorization(bool protect)
    {
        _protected = protect;
    }
}

public class MyClass(){

    [RequireAuthorization(true)]
    public bool method1(){
       // some actions
    }
}

一些想法吗？

推荐答案

属性仅仅是元数据，它们是即时编译和你的codeBase类的一部分，但他们并不需要运行。

Attributes are just metadata, they are jitted and part of your codebase, but they don't need to run.

要强制运行你的自定义属性，你可以使用反射，下面会引起你的 RequireAuthorization 类的构造函数来执行：

To enforce running your custom Attribute you could use reflection, the following would cause the constructor of your RequireAuthorization class to be executed:

MemberInfo memberInfo = typeof(MyClass).GetMethod("method1");
var attributes = memberInfo.GetCustomAttributes(false);

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