WebApi 查询字符串从 RequestURI 中剥离

我有一个 WebApi Get 操作

public HttpResponseMessage Get()
    {
        try
        {
            var queryValue = Request.RequestUri.ParseQueryString();
            if (queryValue.Count == 0)
            {
                return Request.CreateResponse(HttpStatusCode.BadRequest, "Query String Filters Required");
            }

我用这个网址打电话

api/funds?FundProductGroupCT=favourite&pagesize=10&startindex=8

请求 Uri 始终剥离查询字符串。

这是我的全球.asax

  GlobalConfiguration.Configuration.Routes.MapHttpRoute(
           name: "DefaultApi",
           routeTemplate: "api/{controller}/{id}",
           defaults: new { id = System.Web.Http.RouteParameter.Optional }
       );
    System.Web.Http.GlobalConfiguration.Configuration.Routes.MapHttpRoute
        ("default", routeTemplate: "api/{controller}/{action}/{id}", defaults: new { id = System.Web.Http.RouteParameter.Optional });