c# - Autofac XML Configuration & Properties Override or Provide if not present? -

i've got application using autofac @ moment. i've structured autofac register config file after modules loaded in. (for xml-based override of default behaviour).

right i've got class bunch of basic environmental settings (a slew of public auto-properties really). class tries guess default configuration based on settings, idea each environment app runs under override these settings in xml config.

here's problem:

earlier in development of system, things peachy. now seems ignoring input of xml configs. unsure changed caused broken, i'm hoping can point out obvious doing wrong.

i have verified config file getting read/parsed autofac, not applied.

web.config:

<autofac>   <files>     <file name="config/environment.config" section="autofac-common" />     <file name="config/environment.config" section="autofac-public" />   </files> </autofac> 

environment.config:

<configuration>   <configsections>     <section name="autofac-common" type="autofac.configuration.sectionhandler, autofac.configuration"/>     <section name="autofac-public" type="autofac.configuration.sectionhandler, autofac.configuration"/>   </configsections>    <!-- common -->   <autofac-common>     <components>       <component type="myapp.web.configuration.serverconfiguration, myapp.web"              service="myapp.web.configuration.iserverconfiguration, myapp.web">         <properties>           <property name="host" value="beta.mysite.com" />           <property name="mediahost" value="beta.media.mysite.com" />         </properties>       </component>     </components>   </autofac-common>   <!-- web site -->   <autofac-public>     <modules>       <module type="myapp.configuration.cachingmodule, myapp">         <properties>           <property name="disable" value="true" />         </properties>       </module>     </modules>   </autofac-public> </configuration> 

container building code

    var builder = new containerbuilder();      // register identifier it's available modules     builder.registertype<serveridentifier>()         .as<iserveridentifier>()         .singleinstance();     var container = builder.build();      builder = new containerbuilder();     builder.registermodule(new cachingmodule() { disable = true });     builder.registermodule(new loggermodule());     builder.registermodule(new inventorymodule());     builder.registermodule(new catalogmodule());     builder.registermodule(new webmodule(container));      // override settings xml     builder.registermodule(new configurationsettingsreader("autofac"));      builder.update(container); 

autofac version 2.3.2.632 .net 3.5

the problem in <files> section. since handled fileelementcollection, configuration class inheriting namedconfigurationelementcollection class , using name property key value, multiple entries must have unique name values.

since referring same name twice, first entry referring autofac-common section overwritten second entry. thus, service never registered, cachingmodule.

i cannot whether new behavior on autofac's part or not, far can tell source, fileelementcollection class introduced in 2.0 , haven't changed logic since then. have referenced different .config files earlier?