c# - Issue in Enabling CORS for Web API 1, .net 4.0 -

i need enable cors web api , can't upgrade framework 4.5. i've tried add following web.config see if worked, didn't:

<add name="access-control-allow-origin" value="*" /> <add name="access-control-allow-headers" value="accept,content-type,x-requested-with"/> 

i accessing url http://localhost:8484/api/values/ ajax call

and getting bellow error

xmlhttprequest cannot load http://localhost:8484/api/values. response preflight request doesn't pass access control check: no 'access-control-allow-origin' header present on requested resource. origin 'null' therefore not allowed access. response had http status code 405.

i found simple solution charanjit singh. worked nicely if stuck older visual studio 2010 , on .net 4.0 , of course web api 1. add function global.asax.cs

protected void application_beginrequest(object sender, eventargs e)  {      httpcontext.current.response.addheader("access-control-allow-origin", "*");     if (httpcontext.current.request.httpmethod == "options")     {         httpcontext.current.response.addheader("access-control-allow-methods",                      "get, post, put, delete");         httpcontext.current.response.addheader("access-control-allow-headers",                      "content-type, accept");         httpcontext.current.response.end();      } }  

ref. links: note must scroll bottom comments answer. http://www.codeguru.com/csharp/.net/net_asp/using-cross-origin-resource-sharing-cors-in-asp.net-web-api.html