Question

我有这个控制器：

public class StandingsController : Controller
{
    public ViewResult Index(int id)
    {

    }

    [HttpPost]
    public JsonResult GetStage(int stage, int leagueid)
    {

    }
}

Ajax电话：

 $.ajax({
            url: '@Url.Action("GetStage", "Standings")',
            type: 'POST',
            data: { stage: currentStage, leagueid:leagueid },
            success: function (data) {
                    .............

我在页面加载后发出ajax请求。我想要的是将网址从http://localhost/MyApp/Standings/Index/3更改为http://localhost/MyApp/Standings/3。我添加了一个自定义路线如下：

 routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
 routes.RouteExistingFiles = false;
            routes.MapRoute(null, "Standings/{id}", new { controller = "Standings", action = "Index" });
 routes.MapRoute("Default", "{controller}/{action}/{id}", new { controller = "Home", action = "Index", id = UrlParameter.Optional });

但现在我在进行ajax调用时遇到异常：

   The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ViewResult Index(Int32)' in 'MyApp.Controllers.StandingsController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter.

我不明白什么有ajax调用来处理来自ViewResult的id参数。我真的需要一些帮助。感谢。

Answer 1

期待一个id。试试这个：

url: '@Url.Action("GetStage", "Standings", new { id = 1 })',

......或者这个：

routes.MapRoute(null, "Standings/{id}", 
    new { controller = "Standings", action = "Index" }
    new { id = UrlParameter.Optional, });

添加自定义路由时，Ajax调用不起作用。为什么会这样？

1 个答案: