c# - AutoMapper , WCF and multi layers : how to do with dependency -

i have wcf project multiple layers ( , dto object ) :

-service ( wcf host )
-business layer ( or domain layer )
-data access layer ( using entity framework )

to retrieve database informations , want use automapper map entity object dto object .

but if configure mapping in global.asax , problem : service layer not reference data access layer (and dont want this).

how can ?

thanks lot.

let's assume you're using automapper 5.1, includes profile scanning. first, you'd want put configuration profiles @ appropriate places:

public class entitytodtoprofile : profile {     public entitytodtoprofile() {          createmap<entity, dto>();     } } 

next, in wcf app, wherever app startup is, you'll initialize automapper, passing in assembly names scan profiles:

mapper.initialize(cfg => {     cfg.addprofiles(new [] {         "mylayeredapp.bll",         "mylayeredapp.dal",         "mylayeredapp.service"     }); }); 

automapper scan assemblies profiles, , register them in configuration. make sure call mapper.initialize once @ startup, other app-wide configuration.

or, create 1 wcf project, collapse projects one, , use folders organization instead of this. works.