Webapi Route Prefix

gistfile1.txt

    public class ApiVersion1RoutePrefixAttribute : RoutePrefixAttribute
    {
        private const string RouteBase = "api/{apiVersion:apiVersionConstraint(v1)}";
        private const string PrefixRouteBase = RouteBase + "/";
        public ApiVersion1RoutePrefixAttribute(string routePrefix)
            : base(string.IsNullOrWhiteSpace(routePrefix) ? RouteBase : PrefixRouteBase + routePrefix)
        {
        }
    }
    
        public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            var constraintsResolver = new DefaultInlineConstraintResolver();
            constraintsResolver.ConstraintMap.Add 
("apiVersionConstraint", typeof 
(ApiVersionConstraint));
            config.MapHttpAttributeRoutes(constraintsResolver);
            config.Services.Replace(typeof (IHttpControllerSelector),
                new NamespaceHttpControllerSelector(config));
        }
    }