Optional query strings in ASP.NET Web API?

Question

I'm trying to handle these requests with the same controller action:

1. localhost:52000/api/messages
2. localhost:52000/api/messages?page=1
3. localhost:52000/api/messages?date=2019/29/11&page=1

I made a controller action as following:

[Route("api/messages")]
[HttpGet]
public HttpResponseMessage getMessage(DateTime? date, int? page)

But this only works if the query string value is null, not if the actual query is null.

• Working: localhost:52000/api/messages?date=&page=

• Not working (It doesn't find the action): localhost:52000/api/messages

How can I make every api/messages request be handled by the getMessage() action?

Thanks!

Answer 1

try this

[Route("api/messages")]
[HttpGet]
public HttpResponseMessage getMessage(DateTime? date = null, int? page = null)