.net - Simple Injector: how to inject HttpContext? -

i have started using simple injector di container (mostly performance reason: if has suggestions, please let me know) of classes wrote use httpcontextbase constructor parameter. have resolved removing constructor , creating property, this:

    public httpcontextbase httpcontext     {                 {             if (null == _httpcontext)                 _httpcontext = new httpcontextwrapper(system.web.httpcontext.current);             return _httpcontext;         }         set         {             _httpcontext = value;         }     } 

but don't solution... advices?

you should favor constructor injection on else. possible. can register httpcontextbase follows:

container.register<httpcontextbase>(() =>     new httpcontextwrapper(httpcontext.current),      lifestyle.scoped); 

this can cause problem when calling verify(), since during application startup httpcontext.current null, , httpcontextwrapper not allow passing null constructor.

it's try keep configuration verifiable, , can change registration following:

container.register<httpcontextbase>(() => {     var context = httpcontext.current;     if (context == null && container.isverifying) return new fakehttpcontext();     return new httpcontextwrapper(context); },     lifestyle.scoped); 

fakehttpcontext empty httpcontextbase implementation prevent returning null in case container verifying. fakehttpcontext this:

public class fakehttpcontext : httpcontextbase { } 

do note httpcontext runtime data , injecting runtime data components during construction anti-pattern. instead of injecting httpcontext or abstraction on components, should create application-specific abstraction provides consumer needs (for instance user identity or tenant id). implementation of abstraction can call httpcontext.current internally prevents need httpcontext injected.