c# - Why is my route-enabled HttpGet method viewed as not supporting GET? -

i have pair of , post web api methods work fine. have pair seem set exact same way, , yet method refuses accept calls. attempts end msg, "the requested resource not support http method 'get'."

yet (again) method set , decorated same working one.

here working 1 (both unlabeled "get" (first method) , labeled "post" entered when called):

[routeprefix("api/pricecompliance")] public class pricecompliancecontroller : apicontroller {      [route("{unit}/{begindate}")]     public httpresponsemessage get(string unit, string begindate)     {         . . .       [route("{unit}/{begindate}")]     [httppost]     public void post(string unit, string begindate)     {         . . . 

...and here pair seem identical (different name, of course, , 1 more parameter):

[routeprefix("api/produceusage")] public class produceusagecontroller : apicontroller {     [route("{unit}/{begindate}/{enddate}")]     public httpresponsemessage get(string unit, string beginrange, string  endrange)     {         . . .      [route("{unit}/{begindate}/{enddate}")]     [httppost]     public void post(string unit, string begindate, string enddate)     {         . . . 

as mentioned, non-working second block code, when try call "get", get:

the requested resource not support http method 'get'.

i have attribute routing set so:

public static class webapiconfig {     public static void register(httpconfiguration config)     {         // web api configuration , services         // configure web api use bearer token authentication.         config.suppressdefaulthostauthentication();         config.filters.add(new hostauthenticationfilter(oauthdefaults.authenticationtype));          // web api routes         config.maphttpattributeroutes(); 

why might not supported in latter case?

both when try call clicking link url , when try call postman "http://localhost:52194/api/produceusage/gramps/201312/201412", same "get not supported" jazz.

it turned out had change this:

public httpresponsemessage get(string unit, string beginrange, string endrange) 

...to this:

public httpresponsemessage get(string unit, string begindate, string enddate) 

...so parameter names matched in route:

[route("{unit}/{begindate}/{enddate}")] 

why matters don't know, does.