c# - $Metadata with WebAPi OData Attribute Routing Not Working -

i'm using odata attribute routing odata endpoint. here example of have:

[odatarouteprefix("profile")] public class profileodatacontroller : odatacontroller {     [odataroute]     [enablequery]     public ihttpactionresult get()     {         var repo = new repositories.profilerepository();          return ok(repo.getprofiles());     }      [odataroute("({key})")]     [enablequery]     public ihttpactionresult get([fromodatauri] string key)     {         var repo = new repositories.profilerepository();          var result = repo.getprofiles().singleordefault(x => x.id== key);         if (result == null) return notfound();          return ok(result);     } } 

here set up:

config.mapodataserviceroute("odata", "odata", modelgenerator.getedmmodel()); 

here edmmodel generation:

public static iedmmodel generateedmmodel() {     var builder = new odataconventionmodelbuilder();      builder.entityset<profile>("profile").entitytype.haskey(x => x.id);      return builder.getedmmodel(); } 

the urls /odata/profile , /odata/profile('someid') both work, when try access $metadata endpoint (/odata/$metadata#profile), following error:

{"message":"no http resource found matches request uri 'http://****/odata/$metadata'.","messagedetail":"no type found matches controller named 'metadata'."}

do need create controller/action serving metadata? if so, how action implemented?

turns out had replacement of iassembliesresolver.

i had implemented custom version provide component assemblies had implemented controllers in. however, error said, couldn't find controller named metadatacontroller. turns out, odata implements one: system.web.odata.metadatacontroller, provides $metadata keyword.

since had implemented own iassembliesresolver, system.web.odata assembly wasn't being included, , $metadata failed. once discovered this, , updated assembly resolver explicitly include odata assembly, works should.