Asp.net WEB API - What problems could arise if I use POST instead of PUT and DELETE?
This is fairly common and there is even a somewhat standard http header for it. It's called "http method override" and you'll find some good stuff in this question X-HTTP-Method-Override gives NotFound (404) on ASP.NET Web API
Thanks to Robert Levy I knew how this problem was called. Once I knew what the problem was , I did a little googlig and in this blog I found how to solve it:
http://www.hanselman.com/blog/HTTPPUTOrDELETENotAllowedUseXHTTPMethodOverrideForYourRESTServiceWithASPNETWebAPI.aspx