如何解決這個路由配置？配置的路由返回404

Question

我試圖定義一個路由配置，這將使一個可選的「區域」在下面的網址，所有這些都將默認主頁：

/uk/home // where the 'uk' parameter can be either 'uk' or 'us' 
/uk  // where the 'uk' parameter can be either 'uk' or 'us' 
/  // in this case, I just want the region to default to 'uk' 

結果我雖然變得不理想。第一個（/uk/home），而第三個（/）都工作，但第二個（/uk），返回404

的配置被定義爲：

 routes.MapRoute(
      null, 
      "{region}/{controller}", 
      new { region = "^UK|US$" }, 
      new { controller = "Home", action = "Index" } 
      ); 

     routes.MapRoute(
      null, 
      "{region}", 
      new { region = "^UK|US$" }, 
      new { controller = "Home", action = "Index" } 
      ); 

     routes.MapRoute(
      null, 
      //"{region}", 
      "", 
      new {region = "UK", controller = "Home", action = "Index" } 
      ); 

我需要做什麼來確保所有3個URL都默認爲主頁，空URL將默認地區設爲'英國'？

Answer 1

嘗試以下途徑：

routes.MapRoute(
    "Region", 
    "{region}/{controller}", 
    new { controller = "Home", action = "Index" }, 
    new { region = "^UK|US$" } 
); 

routes.MapRoute(
    "Default", 
    "", 
    new { controller = "Home", action = "Index", region = "UK" } 
);