AspNet.Mvc.TypedRouting.LinkGeneration.ServiceProviderExtensions.GetExpressionRouteHelper C# (CSharp) Метод

        public static IExpressionRouteHelper GetExpressionRouteHelper(this IServiceProvider serviceProvider)
        {
            var expressionRouteHelper = serviceProvider?.GetService<IExpressionRouteHelper>();
            if (expressionRouteHelper == null)
            {
                throw new InvalidOperationException("'AddTypedRouting' must be called after 'AddMvc' in order to use typed routing and link generation.");
            }

            return expressionRouteHelper;
        }
    }