C# How to use Autofac to register httpcontextbase

Question

I use the following code to register httpcontextbase, but sometimes there are non null errors.

error message:

Value cannot be null. Parameter name: httpContext

            builder.RegisterModule(new AutofacWebTypesModule());
            if(HttpContext.Current != null)
            {
                builder.Register(c =>
                    (new HttpContextWrapper(HttpContext.Current) as HttpContextBase))
                    .As<HttpContextBase>()
                    .InstancePerLifetimeScope();
                builder.Register(c => c.Resolve<HttpContextBase>().Request)
                    .As<HttpRequestBase>()
                    .InstancePerLifetimeScope();
                builder.Register(c => c.Resolve<HttpContextBase>().Response)
                    .As<HttpResponseBase>()
                    .InstancePerLifetimeScope();
                builder.Register(c => c.Resolve<HttpContextBase>().Server)
                    .As<HttpServerUtilityBase>()
                    .InstancePerLifetimeScope();
                builder.Register(c => c.Resolve<HttpContextBase>().Session)
                    .As<HttpSessionStateBase>()
                    .InstancePerLifetimeScope();

I don't know if it's because of multithreading? Can anyone help? be deeply grateful enter image description here

Answer 1

等待大神答复