由网友(心安然)分享简介：有什么样的事情，你用在现实世界中自定义.NET属性？What kind of things have you used custom .NET attributes for in the real world?我读过关于他们的文章，但我从来没有使用自定义属性。 I've read several articles...

有什么样的事情，你用在现实世界中自定义.NET属性？

What kind of things have you used custom .NET attributes for in the real world?

我读过关于他们的文章，但我从来没有使用自定义属性。

I've read several articles about them, but I have never used custom attributes.

我觉得我可能会俯瞰他们时，他们可能是有用的。

I feel like I might be overlooking them when they could be useful.

我说的是你创建的属性，而不是那些已经包含在框架中。

I am talking about attributes that you create, not ones that are already included in the framework.

推荐答案

我用他们的自定义属性进行验证（即标记字段与我自己的信用卡验证进行验证）和自定义LinqToLucene分析仪我已经写了（即指定哪些分析仪在特定领域使用）。

I've used them "custom" attributes for validation (ie. marking a field to be validated with my own "credit card validation") and custom LinqToLucene analyzers I've written (ie. specifying which analyzer to use on a given field).

验证code，例如，将是这个样子：

The validation code, for example, would look something like this:

public class Customer
{
     [CreditCardValidator]
     string creditCardNumber;

     [AddressValidator]
     string addressLineOne
}

在上面的对象进行验证，每个域的验证与相应的验证多亏了自定义属性。

When the object above is validated, each field is validated with the appropriate validator thanks to the "custom" attribute.

在LinqToLucene的东西，我已经写了自定义属性都不错，因为他们让你找到（通过反射）在运行时的具体领域。例如，如果你有一个客户对象，你可能有兴趣在得到所有被标记为属性指标我：一个自定义的属性可以让你做到这一点很容易，因为它暴露了有关的方式对象的元数据很容易地查询。

In the LinqToLucene stuff I've written custom attributes are nice because they allow you to find (through reflection) specific fields at run time. For example, if you have a customer object, you may be interested in getting all the properties that have been marked as "index me": a custom attribute lets you do this easily since it exposes meta-data about the object in a manner that is easy to query.