Fix simple problem in C# Web API

Im new to Web Api. I need help with creating a simple RESTful API (with Web api). I want to return blog posts by Id and by blog posts by category. But im getting this error: "'PostController' already defines a member called 'Get' with the same parameter types" How shall I solve this? Perhaps by attribute routing? Send me code how to solve this as per best practice. BELOW IS CODE: // GET api/values/5 [HttpGet("{id}")] public JsonResult Get(int id) { return new JsonResult([login to view URL](id)); } [HttpGet("{Find}")] public JsonResult Get(string searchString) { return new JsonResult([login to view URL](searchString)); } [HttpGet("{Category}")] public JsonResult Get(string category) { return new JsonResult([login to view URL]()); } As said, I´m new to Web API and I think the problem is very simple. If you know Web API this might take only 5 min to solve.