.NET 反射的成本是多少?

How costly is .NET reflection?(.NET 反射的成本是多少?)

问题描述

I constantly hear how bad reflection is to use. While I generally avoid reflection and rarely find situations where it is impossible to solve my problem without it, I was wondering...

For those who have used reflection in applications, have you measured performance hits and, is it really so bad?

It is. But that depends on what you're trying to do.

I use reflection to dynamically load assemblies (plugins) and its performance "penalty" is not a problem, since the operation is something I do during startup of the application.

However, if you're reflecting inside a series of nested loops with reflection calls on each, I'd say you should revisit your code :)

For "a couple of time" operations, reflection is perfectly acceptable and you won't notice any delay or problem with it. It's a very powerful mechanism and it is even used by .NET, so I don't see why you shouldn't give it a try.

这篇关于.NET 反射的成本是多少?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！