MVC6輸入asp-for not change模型屬性值

Question

我在嘗試更新模型屬性值，但在httpost中未反映輸入的新值，顯示原始值。 感謝您的幫助。

<div class="row row-padding"> 
<section class="form-field"> 
    <input asp-for="bidDataProcess.MaxBidPosted" type="number" class="form-control" /> 
    <form asp-controller="Item" asp-action="PlaceBid" asp-route-ItemId="@Model.itemDescription.ItemId" asp-route-MaxBid="@Model.bidDataProcess.MaxBidPosted" method="post" class="clearfix"> 
     <input id="PlaceBid" type="submit" style="background-color:blue;color:white; font-weight:bold;width:50%" class="form-control text-center" value="Place Bid" /> 
    </form> 
</section> 

---

[HttpPost] 
public ActionResult PlaceBid(int ItemId, decimal MaxBid) 
{ 
// Maxbid resturns the original value not the new value entered. 
decimal maxBid = MaxBid; 
return View(); 
} 

Answer 1

• 你不需要複製文本的形式要素投入和routevalues。
• 你MaxBidPosted輸入需要表單標籤內，否則MaxBid控制器將爲零
• 您輸入的域名（MaxBidPosted）需要你的控制器參數（MaxBid）否則MaxBid匹配的控制器將是零

CSHTML：

<div class="row row-padding"> 
     <section class="form-field"> 
      <form asp-controller="Item" asp-action="PlaceBid" asp-route-ItemId="@Model.ItemId" method="post" class="clearfix"> 
       <input asp-for="MaxBidPosted" type="number" class="form-control" /> 
       <input id="PlaceBid" type="submit" style="background-color:blue;color:white; font-weight:bold;width:50%" class="form-control text-center" value="Place Bid" /> 
      </form> 
     </section> 
    </div> 

控制器：

[HttpPost] 
    public ActionResult Index(int ItemId, decimal MaxBidPosted) 
    { 
     decimal maxBid = MaxBidPosted; 
     return View(); 
    }