Configuring Web API Route Config - asp.net-web-api

Question

I have an api action in my controller like below.
[RoutePrefix("api/export")]
public class ExportController : ApiController
{
[HttpPost]
public HttpResponseMessage Report([FromBody]ReportInput input, string reportType)
{
}
}
And I have added an configuration to my route config like this.
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{action}/{reportType}",
defaults : new {reportType = RouteParameter.Optional}
);
But I cannot call my API url below. Which configuration should I do ?
localhost:50773/api/export/report/InsuranceHandlingFiles

Answer 1

You appear to be using atttribute routing already (in the form of [RoutePrefix]). You could switch to it completely. Instead of your current route configuration, you would simply do this:
config.MapHttpAttributeRoutes();
And then, to map a URL such as /api/export/report/InsuranceHandlingFiles, add an additional [Route] attribute to your controller method:
[RoutePrefix("api/export")]
public class ExportController : ApiController
{
[HttpPost, Route("report/{reportType}")]
// ^^^^^^^^^^^^^^^^^^^^^^^^^^^
// add this
public HttpResponseMessage Report([FromBody]ReportInput input, string reportType)
{
…
}
}
If you want reportType to be optional, assign a default value to the string reportType parameter, and (if that isn't enough by itself), add a second route; e.g.:
[HttpPost, Route("report/{reportType}"), Route("report")]
public HttpResponseMessage Report([FromBody]ReportInput input, string reportType = null)
{
…
}