NOTE : this is just an abbreviation of this answer above
Open NuGet Package manager console and run
PM> Install-Package Microsoft.AspNet.WebApi
Add references to System.Web.Routing, System.Web.Net and System.Net.Http dlls if not there already
Add the following class
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
// Web API routes
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
}
}
Add Application_Start method if not there already (in global.asax.cs file)
protected void Application_Start()
{
//this should be line #1 in this method
GlobalConfiguration.Configure(WebApiConfig.Register);
}
Right click controllers folder > add new item > web > Add Web API controller
namespace <Your.NameSpace.Here>
{
public class VSController : ApiController
{
// GET api/<controller> : url to use => api/vs
public string Get()
{
return "Hi from web api controller";
}
}
}