Enabling Cross Origin Resource Sharing (CORS) in ASP.NET Web API 2

This is a quick post on how to enable CORS in Web API 2. It’s actually fairly an easy task. First you need to install Microsoft.AspNet.WebApi.Cors nuget package to the Web API project. You can do it from either of following ways.

1. Nuget Packet Manager

Nuget Packet Manager

2. Package Manager Console

Install-Package Microsoft.AspNet.WebApi.Cors

Then modify the Register method in WebApiConfig.cs as follows.

public static void Register(HttpConfiguration config)

{

   // enabling cross-origin requests

   config.EnableCors(new EnableCorsAttribute("*", "*", "GET, POST, OPTIONS, PUT, DELETE"));

   // other configuration

}

Make sure to add using System.Web.Http.Cors. You can customize the policy by setting different values to EnableCorsAttribute properties.

Happy Coding.

Regards,
Jaliya