ASP.NET Web API Help Pages and Versioning -

i create separate page each version of api. example, user go /help?v=1 see version 1.0 routes , /help?v=2 see version 2.0 routes.

using sdammann.webapi.versioning, added version property versionedapiexplorer return routes defined version , added version argument constructor. tried this:

config.services.add(typeof(iapiexplorer), new versionedapiexplorer(config, "1")); config.services.add(typeof(iapiexplorer), new versionedapiexplorer(config, "2")); 

but gives me following error:

the service type iapiexplorer not supported. parameter name: servicetype 

i added 1 instance of service - config.services.replace(typeof(iapiexplorer), new versionedapiexplorer(globalconfiguration.configuration, "1")); - configuration work, test controller. tried this:

foreach (var service in configuration.services.getservices(typeof(iapiexplorer))) {     if (service.gettype() != typeof(versionedapiexplorer)) continue;      var explorer = service versionedapiexplorer;     if (explorer.version == v) {         apiexplorer = explorer;     } } 

this gives same error received above. know use this.configuration.services.getapiexplorer() don't know how use appropriate instance of versionedapiexplorer. know instantiate appropriate apiexplorer directly in controller, prefer keep in configuration file if possible.

so have 2 questions:

1. how add 2 services of type versionedapiexplorer config object?
2. how retrieve appropriate service in controller?

or there different approach take accomplish same goal?

thank you!

i ended going solution hinted @ in question. feel there's better solution problem, gets job done.

first, added version property versionedapiexplorer:

public string version { get; private set; }  

then modified initializeapidescriptions this:

private collection<apidescription> initializeapidescriptions() {     collection<apidescription> apidescriptions = new collection<apidescription>();     var controllerselector = configuration.services.gethttpcontrollerselector();     idictionary<string, httpcontrollerdescriptor> allcontrollermappings = controllerselector.getcontrollermapping();     idictionary<string, httpcontrollerdescriptor> controllermappings = new dictionary<string, httpcontrollerdescriptor>();     // mappings defined version     if (allcontrollermappings != null && version != null) {         foreach (var key in allcontrollermappings.keys) {             if (key.substring(0, key.indexof('.')) == versionedcontrollerselector.versionprefix + version) {                 controllermappings.add(key, allcontrollermappings[key]);             }         }     }     else if (version == null) {         controllermappings = allcontrollermappings;     }      if (controllermappings != null)     {         foreach (var route in configuration.routes)             exploreroutecontrollers(controllermappings, route, apidescriptions);     }     return apidescriptions; } 

i added method use set version:

public void setversion(string version) {     this.version = version;     this.apidescription = new lazy<collection<apidescription>>(initializeapidescriptions); } 

finally, modified helpcontroller looks this:

public actionresult index(string v) {     return this.view(getapiexplorer(v).apidescriptions); }  private iapiexplorer getapiexplorer(string version) {     if (version == null) {         version = "1";     }      var apiexplorer = this.configuration.services.getapiexplorer() versionedapiexplorer;     if (apiexplorer != null) {         apiexplorer.setversion(version);     }      return apiexplorer; }