c# - ASP.NET MVC : How to get route values

Question

这个问题在这里已经有了答案:





ASP.NET MVC 5 culture in route and url

(2 个回答)


4年前关闭。




我需要获取语言参数的值我试过这段代码

if(HttpContext.Current.Request.RequestContext.RouteData.Values["language"] == null)
 {
    HttpContext.Current.Request.RequestContext.RouteData.Values["language"] =   "en-US";

}

上面的代码使网址如下所示，非常好

http://localhost:25576/en-US/Home

问题是当用户输入 http://localhost:25576/Home 时(不带 en-US) HttpContext.Current.Request.RequestContext.RouteData.Values["language"]的值变成“家”

我的问题是，如果用户删除 en-US 或用户输入 http://localhost:25576/Home，如何获取语言参数的实际值

路由配置

  public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapRoute(
              name: "DefaultLocalized",
              url: "{language}/{controller}/{action}/{id}",
              defaults: new
              {
                  controller = "Home",
                  action = "Index",
                  id = UrlParameter.Optional,
                  language = ""

              }
                  );
         }

Answer 1

您可以新建一个 ActionFilterAttribute为了这个目的:

public class LocalizationAttribute : ActionFilterAttribute
{
    private readonly string _defaultLanguage = "en-US";

    public LocalizationAttribute(string defaultLanguage = null)
    {
        this._defaultLanguage = defaultLanguage ?? this._defaultLanguage;
    }

    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var language = filterContext.RouteData.Values["language"] as string ?? this._defaultLanguage;

        if (language != this._defaultLanguage)
        {
            try
            {
                Thread.CurrentThread.CurrentCulture =
                    Thread.CurrentThread.CurrentUICulture =
                        CultureInfo.CreateSpecificCulture(language);
            }
            catch
            {
                throw new NotSupportedException($"Invalid language code '{language}'.");
            }
        }
    }
}

您还需要注册 ActionFilter作为 GlobalFilter 的一部分.

public class FilterConfig
{
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new LocalizationAttribute("en-US"), 0);
    }
}