DefaultInlineConstraintResolver Error in WebAPI 2

Question

I\'m using Web API 2 and I\'m getting the following error when I send a POST to my API method using IIS 7.5 on my local box.

The inline constraint resolver o         


        

Answer 1

I also got this error when I left a space between the variable name and the variable type in the route, like so:

[HttpGet]
[Route("{id: int}", Name = "GetStuff")]

It should be the following:

[HttpGet]
[Route("{id:int}", Name = "GetStuff")]