asp.net mvc3，需要帮助才能使这个路由约束起作用

Question

只要主题全部小写，它是否有效，有没有办法忽略大小写？

        routes.MapRouteLowercase(
            "TopicList", // Route name
            "{topic}s/{page}", // URL with parameters
            new { controller = "Review", action = "Index", id = UrlParameter.Optional, Topic = "AllTopic" },
            new { topic = @"(app|book|toy|website|article||alltopic)" }
        );

Answer 1

试试这个：

new { topic = @"(?i)(app|book|toy|website|article||alltopic)" }