c# - webapi restful routing not working -

c# - webapi restful routing not working -

i have web api route:

config.routes.maphttproute( name: "customersearchapi", routetemplate: "api/{controller}/{action}/{criteria}", defaults: new { criteria = routeparameter.optional });

this works:

http://localhost/api/customersearch/search?criteria=sdasd

this not:

http://localhost/api/customersearch/search/sdasd

this customersearchcontroller signature:

[httpget] public httpresponsemessage search(string criteria)

can please tell me why?

c# rest routing