启用跨域ASP.net Web API

Question

I have Microsoft Visual Studio Express 2013 for Web, Version 12.0.30501.00 Update 2. I have a solution with 2 project in it, one is a web api, and the second is an MVC project intended for for the views. I have create a simple web api returning httpresponsemessage and I can go in fiddler and I will see the json response. However in my second project when attempting to call through ajax I received a cross domain error.

The solution I try to follow is this http://www.asp.net/web-api/overview/security/enabling-cross-origin-requests-in-web-api . However when installing Install-Package Microsoft.AspNet.WebApi.Cors -pre -project WebService in the console manager I received an error so I used this line instead. Install-Package Microsoft.AspNet.WebApi.Cors then I try to the next step which is config.EnableCors(); its state that

'System.Web.Http.HttpConfiguration' does not contain a definition for 'EnableCors' and no extension method 'EnableCors' accepting a first argument of type 'System.Web.Http.HttpConfiguration' could be found (are you missing a using directive or an assembly reference?)

I am not sure what to afterward, I also try to add using System.Web.Http.Cors; but state that the namespace does not exists. This visual studio was downloaded about 3 weeks ago, I feel this feature should not be hard to install as it fully supported, is there something that i am missing?

Answer 1

You should install a Nuget package Microsoft.AspNet.WebApi.Cors

From the menu in visual studio, go to Management Packages, and then type in the name of the package

Note:
To install from Package Manager Console , use Install-Package Microsoft.AspNet.WebApi.Cors

Answer 2

install a Nuget package `"Microsoft.AspNet.WebApi.Cors" (version="5.1.0")

Add following line in your WebApiConfig.cs file

config.EnableCors(new EnableCorsAttribute("*", "*", "*"));