CLS兼容的属性和数组参数 [英] CLS compliant attributes and array parameters

问题描述

我已经创建了接受它的构造函数（PARAMS）阵列的属性。

I have created an attribute that accepts a (params) array in its constructor.

internal class MyTestAttribute : Attribute
{
    public MyTestAttribute (params Options[] options)
    {
        ....
    }
}

选项这里是一个枚举（有很多值），所以示例调用网站将

Option here is an enum (with lots of values), so a sample call site will be

[MyTest(Option.One, Option.Three)]
internal void SomeMethod(int param1, long param2)
{
  ....
}

一切是桃色为止，设置工作，但我收到一个阵列的属性参数是不符合CLS 的在每次调用现场报警。现在，我不得不承认，我并不需要使用这个组件从任何其他的C＃，我也不做警告-AS-错误，但数百警告越来越烦。

Everything is peachy so far, and the setup works, but I'm receiving an "Arrays as attribute arguments is not CLS-compliant" warning on each call-site. Now, I have to admit that I do not need to use this assembly from anywhere other that C#, nor do I do warnings-as-errors, but the hundreds of warnings are getting annoying.

显而易见的解决方案是关闭CLS遵守，但此刻我不能这样做。

The obvious solution is to turn off CLS-compliance, but at the moment I can't do that.

有一些其他的方法来创建的属性，将仍然做同样的事情，但摆脱了警告？

Is there some other approach to the creation of the attribute that will still do the same thing, but get rid of the warnings?

推荐答案

有两种选择：

1：你可以添加一些重载来代替：

1: you could add some overloads instead:

private MyTestAttribute(Option[] options) {...}
public MyTestAttribute(Option option0)
          : this(new[] {option0}) {}
public MyTestAttribute(Option option0, Option option1)
          : this(new[] {option0, option1}) {}
public MyTestAttribute(Option option0, Option option1, Option option2)
          : this(new[] {option0, option1, option2}) {}
// add a few more, without going crazy

2：如果选项是一个枚举，标志着枚举为 [国旗] 枚举，并有来电者将它们结合起来：

2: if Options is an enum, mark the enum as a [Flags] enum, and have the caller combine them:

[MyTest(Option.One | Option.Two)]

与

[Flags]
public enum Option {
     None = 0,
     One = 1,
     Two = 2,
     Three = 4,
     Four = 8,
     ...
}

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