传递两个可选参数到RedirectToRoute

Question

我将2个可为空的参数传递给一个Products动作。但是我被迫在mallId中传递一些值，否则我得到一个no route table matches found错误。我想在mallId中通过null并在Products行动中收到。

return RedirectToRoute("Products", 
         new 
         { 
          mallId =(Int32?)null, 
          storeId =(Int32?)storeProducts.StoreId 
         }); 


[Route("Mall/{mallId?}/Store/{storeId?}/Products", Name = "Products")] 
public ActionResult Products(string mallId, long? storeId) 
{ 
    return View(products); 
} 

属性路由正在破解我的头，但它也很棒。

Answer 1

[Route("Mall/{mallId?}/Store/{storeId?}/Products", Name = "Products")] 
public ActionResult Products(string mallId = null, long? storeId) 
{ 
    return View(products); 
} 

，不以一个值传递的mallId

Answer 2

您应该提供mallId的默认值。您分发参数的方式使得无法在路线组成中提供mallId：

[Route("Mall/{mallId=all}/Store/{storeId?}/Products", Name = "Products")] 
public ActionResult Products(string mallId = "all", long? storeId = null) 
{ 
    if(mallId == "all") 
     //do something 

    return View(products); 
}