懒惰地初始化AutoMapper(Lazily initializing AutoMapper)

 我一直在ASP.NET 4.5 Webforms应用程序上做一些性能统计，在初始部署后初始启动时看起来有些迟钝。 
 
 我注意到的一点是创建AutoMapper地图确实需要一些时间。 
 
 由于这些地图只是很少使用，我想知道我是否可能“延迟”创建这些地图，直到他们第一次需要它们 - 这是一种“懒惰的初始化”。 
 
 在这种情况下，我必须有一些“非破坏性”（例如，没有抛出异常）的方式来检查给定的地图是否存在 - 如果在AutoMapper中有类似的东西？ 
 
 谢谢！ 

I've been doing some performance stats on an ASP.NET 4.5 Webforms app, which seems a bit sluggish on initial startup after a fresh deployment.
 
One of the points I noticed is that creating the AutoMapper maps does take some time.
 
Since those maps are only used rather rarely, I was wondering if I could possibly "delay" creating those maps until the first time they're needed - sort of a "lazy initialization".
 
In that case, I would have to have some "non-destructive" (e.g. without throwing an exception) way of checking whether or not a given map exists - if there something like that in AutoMapper?
 
Thanks!

原文：https://stackoverflow.com/questions/33640358